(continued)
No. Publication
number
Application
date
Publication
date
Applicant/Owner
Title
25
GB000000469481A 11.02.1936
27.07.1937
Gen Electric Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
or relating to
switches for
converting
electric currents
26
GB000000464164A 26.02.1936
13.04.1937
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
or relating to
electric
discharge
devices
27
GB000000476758A 10.07.1936
15.12.1937
MI O Valve
Company Ltd
Robert Le
Rossignol
[EN]
Improvements in
or relating to
thermionic
valves and other
electric
discharge
devices
28
GB000000474933A 15.07.1936
10.11.1937
M O Valve Co Ltd
Robert Le
Rossignol
Stephen Michael
Duke
[EN]
Improvements in
or relating to
electric
discharge
devices with
indirectly heated
cathodes
29
GB000000470212A 17.07.1936
11.08.1937
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
or relating to
electric
discharge
devices with
external cooled
anodes
30
GB000000490385A 15.02.1937
15.08.1938
M O Valve Co Ltd
Robert Le
Rossignol
[EN]
Improvements in
demountable
electric
discharge
devices
31
GB000000496710A 07.10.1937
05.12.1938
MI O Valve
Company Ltd
Robert Le
Rossignol
Stephen Michael
Duke
[EN]
Improvements in
thermionic
valves
(continued)
546
Appendix F: Robert Le Rossignol’s Patents 1909–1956