Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Charles Ellis Halls
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Individual
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Individual
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Publication date
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Application grantedgrantedCritical
Publication of GB189411332ApublicationCriticalpatent/GB189411332A/en
H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
H01R39/00—Rotary current collectors, distributors or interrupters
H01R39/02—Details for dynamo electric machines
H01R39/04—Commutators
H01R39/045—Commutators the commutators being made of carbon
GB189411332D1894-06-111894-06-11Improvements in Oil Lamps.
ExpiredGB189411332A
(en)