GB191304502A - Telephone Attachment. - Google Patents

Telephone Attachment.

Info

Publication number
GB191304502A
GB191304502A GB191304502DA GB191304502A GB 191304502 A GB191304502 A GB 191304502A GB 191304502D A GB191304502D A GB 191304502DA GB 191304502 A GB191304502 A GB 191304502A
Authority
GB
United Kingdom
Prior art keywords
telephone attachment
receiver
telephone
rightangles
earpieces
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
Other languages
English (en)
Inventor
Nathan Marx
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191304502A publication Critical patent/GB191304502A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
GB191304502D 1912-02-06 1913-02-21 Telephone Attachment. Expired GB191304502A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US455182TA 1912-02-06 1912-02-06

Publications (1)

Publication Number Publication Date
GB191304502A true GB191304502A (en) 1913-10-16

Family

ID=34359073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191304502D Expired GB191304502A (en) 1912-02-06 1913-02-21 Telephone Attachment.

Country Status (3)

Country Link
DE (1) DE262871C (enrdf_load_stackoverflow)
FR (1) FR455135A (enrdf_load_stackoverflow)
GB (1) GB191304502A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980842A (en) * 1975-03-05 1976-09-14 Weisbrich Alfred L Telephone listening comfort adaptor (TLCA)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980842A (en) * 1975-03-05 1976-09-14 Weisbrich Alfred L Telephone listening comfort adaptor (TLCA)

Also Published As

Publication number Publication date
FR455135A (fr) 1913-07-23
DE262871C (enrdf_load_stackoverflow)

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