CH567769A5 - - Google Patents
Info
- Publication number
- CH567769A5 CH567769A5 CH246574A CH246574A CH567769A5 CH 567769 A5 CH567769 A5 CH 567769A5 CH 246574 A CH246574 A CH 246574A CH 246574 A CH246574 A CH 246574A CH 567769 A5 CH567769 A5 CH 567769A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/44—Styli, e.g. sapphire, diamond
- G11B3/56—Sharpening
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732308891 DE2308891C3 (de) | 1973-02-23 | Verfahren zur Herstellung von Matrizen zum Prägen von Rillen in Folien, insbesondere in Schleiffolien für das Anschleifen von Abtastern für Bildplatten |
Publications (1)
Publication Number | Publication Date |
---|---|
CH567769A5 true CH567769A5 (fr) | 1975-10-15 |
Family
ID=5872792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH246574A CH567769A5 (fr) | 1973-02-23 | 1974-02-21 |
Country Status (10)
Country | Link |
---|---|
US (1) | US3956075A (fr) |
JP (1) | JPS49119601A (fr) |
AT (1) | AT336914B (fr) |
BE (1) | BE811297A (fr) |
CH (1) | CH567769A5 (fr) |
FR (1) | FR2219479B3 (fr) |
GB (1) | GB1457350A (fr) |
IT (1) | IT1008289B (fr) |
NL (1) | NL7401654A (fr) |
SE (1) | SE391053B (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2821297C3 (de) * | 1978-05-16 | 1981-09-17 | Teldec Telefunken-Decca-Schallplatten Gmbh, 2000 Hamburg | Verfahren zur Herstellung eines plattenförmigen Informationsträgers |
US4394341A (en) * | 1982-02-01 | 1983-07-19 | Rca Corporation | Method to center and separate electroformed replicas from a matrix |
US4431487A (en) * | 1983-06-30 | 1984-02-14 | Rca Corporation | Matrixing apparatus and method for use in the manufacture of molded records |
US4479853A (en) * | 1984-03-29 | 1984-10-30 | Rca Corporation | Method for the manufacture of record stampers |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE637310C (de) * | 1936-10-26 | Fedor Geske | Verfahren zum Herstellen von Schallplatten | |
US2092880A (en) * | 1933-09-26 | 1937-09-14 | Rca Corp | Record pressing matrix |
US2067502A (en) * | 1934-08-16 | 1937-01-12 | Bell Telephone Labor Inc | Art of duplicating phonograph records |
US3584094A (en) * | 1969-01-08 | 1971-06-08 | Pic Tur Records Inc | Method of making picture-type phonograph records |
JPS4932124B1 (fr) * | 1970-05-25 | 1974-08-28 | ||
US3801476A (en) * | 1972-03-01 | 1974-04-02 | Teldec Telefunken Decca | Method for improving the centering of stamping matrices |
-
1974
- 1974-02-06 NL NL7401654A patent/NL7401654A/xx not_active Application Discontinuation
- 1974-02-15 AT AT123874A patent/AT336914B/de not_active IP Right Cessation
- 1974-02-18 SE SE7402124A patent/SE391053B/xx unknown
- 1974-02-19 JP JP49019838A patent/JPS49119601A/ja active Pending
- 1974-02-20 BE BE141146A patent/BE811297A/fr unknown
- 1974-02-20 IT IT48613/74A patent/IT1008289B/it active
- 1974-02-21 CH CH246574A patent/CH567769A5/xx not_active IP Right Cessation
- 1974-02-21 US US05/444,345 patent/US3956075A/en not_active Expired - Lifetime
- 1974-02-22 FR FR7406204A patent/FR2219479B3/fr not_active Expired
- 1974-02-25 GB GB847974A patent/GB1457350A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3956075A (en) | 1976-05-11 |
FR2219479A1 (fr) | 1974-09-20 |
ATA123874A (de) | 1976-09-15 |
GB1457350A (en) | 1976-12-01 |
FR2219479B3 (fr) | 1976-12-03 |
SE391053B (sv) | 1977-01-31 |
IT1008289B (it) | 1976-11-10 |
DE2308891B2 (de) | 1975-09-04 |
BE811297A (fr) | 1974-06-17 |
JPS49119601A (fr) | 1974-11-15 |
AT336914B (de) | 1977-06-10 |
NL7401654A (fr) | 1974-08-27 |
DE2308891A1 (de) | 1974-09-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |