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
Alfred Hinzpeter
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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
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Publication of GB191213807ApublicationCriticalpatent/GB191213807A/en
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/02—Constructional features of telephone sets
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Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
GB191213807D1912-06-121912-06-12An Improved Method of, and Apparatus for, Telephonically Ordering Cabs, Messengers and the like.
ExpiredGB191213807A
(en)