Patent US3537425A successfully refreshed from Google Patents.
US3537425A
Expired / Lapsed
US
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Apparatus for coating memory discs with oxide or like film
Assignee: Disc Pack Corp
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Filing: 1966-09-14
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Granted: 1970-11-03
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Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Charles W David
- 👤 Eugene A Munson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/84; G11B5/851; B; B05; B05B; B05B12/00; B05B12/16; B05B12/20; B05B13/00; B05B13/02; B05B13/04; B05B13/0442; C; C23; C23C; C23C4/00; C23C4/12; G11B5/842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |