(continued)
No. Publication
number
Application
date
Publication
date
Applicant/Owner
Title
32
GB000000497115A 23.12.1937
13.12.1938
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
large thermionic
valves
33
GB000000514651A 12.05.1938
14.11.1939
Donald Arthur
Boyland M O
Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
air-cooled
thermionic
valves
34
GB000000519490A 24.10.1938
28.03.1940
Gen Electric Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
thermionic
amplifiers
35
GB000000530296A 21.06.1939
09.12.1940
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
the cooling of
external metal
parts of electric
discharge
devices
36
GB000000589959A 20.10.1943
04.07.1947
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
gas-tight joints
between metals
and ceramics
37
GB000000916150A 23.06.1947
23.01.1963
Gen Electric Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
glands for shafts
rotatable at high
peripheral
speeds
38
GB000000663304A 20.04.1949
19.12.1951
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
or relating to
gas-filled
thermionic
valves
39
GB000000666175A 06.05.1949
06.02.1952
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
or relating to
directly heated
cathodes for
thermionic
valves
Appendix F: Robert Le Rossignol’s Patents 1909–1956
547