FR532617A - Improvements to discs for talking machines - Google Patents

Improvements to discs for talking machines

Info

Publication number
FR532617A
FR532617A FR532617DA FR532617A FR 532617 A FR532617 A FR 532617A FR 532617D A FR532617D A FR 532617DA FR 532617 A FR532617 A FR 532617A
Authority
FR
France
Prior art keywords
discs
talking machines
talking
machines
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
French (fr)
Inventor
Alfred Widmann
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 filed Critical
Application granted granted Critical
Publication of FR532617A publication Critical patent/FR532617A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
FR532617D 1920-03-26 1921-03-23 Improvements to discs for talking machines Expired FR532617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US369027A US1370719A (en) 1920-03-26 1920-03-26 Talking-machine record

Publications (1)

Publication Number Publication Date
FR532617A true FR532617A (en) 1922-02-08

Family

ID=23453756

Family Applications (2)

Application Number Title Priority Date Filing Date
FR532617D Expired FR532617A (en) 1920-03-26 1921-03-23 Improvements to discs for talking machines
FR539953D Expired FR539953A (en) 1920-03-26 1921-08-26 Improvements to recording discs for talking machines

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR539953D Expired FR539953A (en) 1920-03-26 1921-08-26 Improvements to recording discs for talking machines

Country Status (2)

Country Link
US (1) US1370719A (en)
FR (2) FR532617A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1522370A (en) * 1975-12-04 1978-08-23 Roeloffzen J Method of manufacturing preforms for gramophone records

Also Published As

Publication number Publication date
US1370719A (en) 1921-03-08
FR539953A (en) 1922-07-04

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