Patent US1675508A successfully refreshed from Google Patents.
Patent US3227634A successfully refreshed from Google Patents.
US3227634A
Expired / Lapsed
US
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Method of manufacturing moulds for pressing phonograph records
Assignee: US Philips Corp
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Filing: 1962-10-03
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Granted: 1966-01-04
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Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 Rinzema Anne
- 👤 Edelstein Marcel Jacques
- 👤 Jan Christoffel Van Houten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:40
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF PRODUCING A STAMPER FOR MAKING PHONOGRAPH RECORDS, COMPRISING THE STEPS OF FORMING A MASTER HAVING A VIBRATION RECORD ON THE SURFACE OF A DISC-SHAPED MEMBER OF LACQUER MATERIAL, SUPPORTING THE VIBRATION RECORD ON A MEMBER HAVING A PERIPHERAL FRUSTROCONICAL PORTION INCLINED AT AN ANGLE OF MORE THAN 90* TO SAID SURFACE AND AN OUTER ANNULAR PORTION SUBSTANTIALLY PARALLEL TO SAID SURFACE, AND ELECTROPLATING THE SURFACE OF THE SAID VIBRATION RECORD AND ITS SUPPORTING MEMBER TO FORM A SHELL THEREFROM.
Claim 2
Independent Claim
82 words
A METHOD OF PRODUCING A STAMPER FOR MAKING PHONOGRAPH RECORDS, COMPRISING THE STEPS OF FORMING A MASTER HAVING A VIBRATION RECORD ON THE SURFACE OF A DISC-SHAPED MEMBER OF LACQUER MATERIAL, SUPPORTING THE VIBRATION RECORD ON A MEMBER HAVING A PERIPHERAL FRUSTROCONICAL PORTION INCLINED AT AN ANGLE OF MORE THAN 90* TO SAID SURFACE AND AN OUTER ANNULAR PORTION SUBSTANTIALLY PARALLEL TO SAID SURFACE, AND ELECTROPLATING THE SURFACE OF THE SAID VIBRATION RECORD AND ITS SUPPORTING MEMBER TO FORM A SHELL THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |