Patents

*Case*	*Patent no*	*Subject*	*Co Author, if any*
1	296827
2	321682
3	356111	Valve Circuits
4	355705	Frequency Measurements
5	344936	Amplifiers	Sandeman 11-5-1
6	356210	Valve Amplifiers
7	360891	Valve Circuits
8	401728	Wireless Signalling
9	no record
10	no record
11	no record
12	480548	Wireless Signalling	Buizau & Gray 31-1-13
13	no record		Olavier 31-1-13
14	no record		Combined with 15
15	511222	Transmission Systems
16	520488	Phase Changing
17	509820	Repeating Systems	Deloraine. 9/17.
18	522799	Automatic Volume Control
19	no record
20	535860	Signalling systems with no background noise.
21	54023	Electrical signalling systems.	C.W.Earp 21-19
22	582187	Electromagnetic systems for detecting moving bodies.
23	656152	Pulse signalling system.
24	610774	Reduction of crosstalk in multiplex pulse systems.	P.K.Chatterjea 84-24
25	639827	Gas discharge tube with ionisation.
26	Appl. 22141	Gas discharge tube with ionisation, coupling, etc.
27	Appl.29542	Reduction of de-ionisation time of multi-gap gaseous discharge tube by reverse potential.
28	Appl.29543	Reduction of de-ionisation time of multi-gap gaseous discharge tube by special atmosphere.
29	665817	Switching from last to first gap of multi-gap gaseous discharge tube for continuous operation.
30	665818	Use of multi-gap gaseous k discharge tube as frequency divider or counter.
31	666394	Use of multi-gap gaseous discharge tube as register and delay device.
32	665819	Distribution device for instance in time displaced multiplex switching systems.
33	642146	Multi-function time division circuits.	E.D.Phinney - 3 - 33
34	639839	Pulse train generating tube.
35	665982	Multi-gap tube with individual extinguishing gaps.
36	639841	Tube with helical cathode to replace corrugated cathode.
37	Appl.14872	Double gap sequence ionisation coupling tube.
38		Gas-filled tube embodiments of Chatterjea-Reeves 84-24.
39	Appl.4310	Cold cathode tubes.	C.H.Hough
40	Appl.24199	Gas tube sub-set circuit.	E.M.Deloraine 69
41	Appl.24200	Gas discharge tube used in line finder of sub-set.	E.M.Deloraine 70
42	648541	Gas tube microphone and delay device.	E.M.Deloraine 71
43	Appl.7722	High pressure gas discharge tube.
44	660253	Pulse modulator using ionisation spread.
45	Appl.7724/47	Cold cathode tube with inclined discharge surface.
46	650032	Pulse demodulating and short period storing.
47	659805	Squeg tab for sequence discharge tube.
48	Appl.12086/47	Priming gap in sequence discharge tubes.
49	Appl.12086/47	Controlled level pulse modulator.
509	Appl.12088/47	Auto level control of pulse modulator in sub set.
51	Appl.12089/47	Lavite ionisation delay tube.
52	Appl.12090/47	Circuit with two squeg tabs for different time constants.
53	Appl.12091/47	Rectifier stabilizing circuit for counter discharge tubes.
54	Appl.19614/47	Ionisation spread along smooth wires.
55	677984	Electronic line finder & switching system using gas discharge tubes.
56	677985	Electronic counter using gas tube without maintaining battery.
57	Appl.19617/47	Multi level information storage discharge tube.
58	665822	Electronic register storing. nature and number of impulses.
59	669534	Dropped Pulse gating circuit.
60	Appl.14873/47	Pulse demodulator circuit.
61	665820	Electronic counter circuit with two element discharge tube.
62	Appl.14875/47	Demodulation of variable frequency pulses.
63	659806	Pulse modulator using cold cathode tubes.
64	659809?	Use of gas filled tube as linear amplifier.
65	659808	Pulse repeater.
66	659809?	Pulse modulator and demodulator.
67	642330	Pulse step modulation applied to reduction in signal frequency baud.
68	680702	Electronic switching modulation.	E. M. Deloraine 72
69	650890	A Double bank sequence discharge tube.
70	no record	?
71	Appl.12090/48	Cold cathode modulator tube.
72	656692	Transistor trigger circuits.
73	654909	Delay circuits employing Germanium crystals.
74	683558	Stabilization of crystal triodes.
75	706514	Germanium diode with negative resistance in the conducting direction.
76	706515	Positive gap diode as a multi point counter.
77	706516	Positive gap diodes applied to VSW receivers.
78	Appl.29097/51	Positive gap germanium rectifiers for microwaves.
79	882168	Optical gating by pairs of negative impedance photoconductive devices
I.S.	1243	Counting circuits.	E.D. Phinney. 12/50
80	3250/63	Digital companding coder.	D.R.Barber 8
81	20842/63	Equilibrium coder.
82	37714/63	P.C.M. decoder.	K. W.Cattermole 25 R.Kitajewski 2