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1925-04-28
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1925-01-15
Improvements in or relating to electric switchgear
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1924-04-14
Improvements in or relating to folding-boxes
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1924-09-30
Improvements in or relating to electric circuit-breakers andthe like
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1926-11-09
Improvements in or relating to electric relays
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1925-06-18
Improvements in or relating to electrical resistances
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1925-05-13
Improvements relating to electrical relays
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1926-08-11
Improvements in or relating to electric switehgear
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1926-07-29
Improvements in or relating to insulators
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1924-12-19
Improvements in or relating to electric braking mechanism
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1926-08-23
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1927-03-14
Improvements in or relating to circuit interrupters
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1923-05-29
Improvements in or relating to electric switches
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1924-05-31
Improvements in or relating to electric switches
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1923-03-12
Improvements in or relating to electric switch-fuses
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1925-01-06
Improvements in or relating to contact plugs
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1926-06-22
Improvements in or relating to fire-alarms
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1922-06-27
Improvements in or relating to electric switches
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1923-03-27
Improvements in or relating to electromagnetic relays
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1925-11-04
Improvements in or relating to windows
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1924-07-18
Improvements in or relating to fluid-pressure operated engines
CA237241A
(en )
1924-01-22
Electric relay
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Improvements in electrical plug-switches
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Improvements in or relating to oil-immersed electric switches
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Improvements in or relating to electromagnetic relays