GB297390A - Improvements in or relating to microtelephones - Google Patents

Improvements in or relating to microtelephones

Info

Publication number
GB297390A
GB297390A GB26757/28A GB2675728A GB297390A GB 297390 A GB297390 A GB 297390A GB 26757/28 A GB26757/28 A GB 26757/28A GB 2675728 A GB2675728 A GB 2675728A GB 297390 A GB297390 A GB 297390A
Authority
GB
United Kingdom
Prior art keywords
contacts
microphone
receiver
sleeve
hand
Prior art date
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
GB26757/28A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB297390A publication Critical patent/GB297390A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB26757/28A 1927-09-20 1928-09-18 Improvements in or relating to microtelephones Expired GB297390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE297390X 1927-09-20

Publications (1)

Publication Number Publication Date
GB297390A true GB297390A (en) 1929-11-28

Family

ID=20307356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26757/28A Expired GB297390A (en) 1927-09-20 1928-09-18 Improvements in or relating to microtelephones

Country Status (4)

Country Link
BE (1) BE354302A (enrdf_load_stackoverflow)
FR (1) FR660753A (enrdf_load_stackoverflow)
GB (1) GB297390A (enrdf_load_stackoverflow)
NL (1) NL25060C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL25060C (enrdf_load_stackoverflow)
FR660753A (fr) 1929-07-17
BE354302A (enrdf_load_stackoverflow)

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