GB190020797A - Improvements relating to Sound-magnifying Appliances for Telephones, Phonographs, and the like - Google Patents

Improvements relating to Sound-magnifying Appliances for Telephones, Phonographs, and the like

Info

Publication number
GB190020797A
GB190020797A GB190020797DA GB190020797A GB 190020797 A GB190020797 A GB 190020797A GB 190020797D A GB190020797D A GB 190020797DA GB 190020797 A GB190020797 A GB 190020797A
Authority
GB
United Kingdom
Prior art keywords
phonographs
telephones
sound
improvements relating
magnifying
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
Inventor
Otto Rieger
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 GB190020797A publication Critical patent/GB190020797A/en
Expired legal-status Critical Current

Links

GB190020797D 1900-11-17 1900-11-17 Improvements relating to Sound-magnifying Appliances for Telephones, Phonographs, and the like Expired GB190020797A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190020797T 1900-11-17

Publications (1)

Publication Number Publication Date
GB190020797A true GB190020797A (en) 1901-03-30

Family

ID=43800613

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190020797D Expired GB190020797A (en) 1900-11-17 1900-11-17 Improvements relating to Sound-magnifying Appliances for Telephones, Phonographs, and the like

Country Status (1)

Country Link
GB (1) GB190020797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458038A (en) * 1942-08-29 1949-01-04 Rca Corp Acoustical apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458038A (en) * 1942-08-29 1949-01-04 Rca Corp Acoustical apparatus

Similar Documents

Publication Publication Date Title
GB190020797A (en) Improvements relating to Sound-magnifying Appliances for Telephones, Phonographs, and the like
CA68218A (en) Telephone appliance
GB190001131A (en) Combined Envelope-opener and Letter-balance.
CA86747A (en) Sofa
CA74352A (en) Type furniture
CA66801A (en) Telephone
GB190004593A (en) Improvements in the Manufacture of Nitro-explosives.
CA73314A (en) Stove
CA70090A (en) Stove
CA73905A (en) Stove
CA70723A (en) Stove
CA73118A (en) Stove
CA73029A (en) Stove
CA92940A (en) Kettle
CA92403A (en) Telephone
CA68353A (en) Telephone desk
CA92319A (en) Wardrobe
CA89967A (en) Wardrobe
GB190023723A (en) Music-leaf-turner.
CA88544A (en) Neckwear
CA88706A (en) Dresser
CA89558A (en) Dresser
CA94794A (en) Extension table
CA88600A (en) Extension table
CA70170A (en) Bedstead