US3481083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of finishing memory discs
Assignee: Mrx Corp
•
Filing: 1966-09-16
•
Granted: 1969-12-02
•
Expires: 1986-09-16
Abstract
No abstract record available.
Inventors
- 👤 Charles W David
- 👤 Eugena A Munson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:13
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/004; B24B7/00; B24B7/10; B24B7/16; B24B7/17; G; G11; G11B; G11B5/00; G11B5/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL26918C
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FR364707A
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US1536928A
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US1909155A
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US2258733A
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US2315859A
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US3045399A
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US3116572A
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US3341983A
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US3333366A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |