US3430966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent recording disc
Assignee: Discovision Associates
•
Filing: 1967-04-03
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Granted: 1969-03-04
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Expires: 1987-04-03
Abstract
No abstract record available.
Inventors
- 👤 David Paul Gregg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/0282; G11B23/00; G11B23/0014; G11B23/0021; G11B23/0028; G11B23/0035; G11B7/00; G11B7/24; G11B7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1951198A
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US2040693A
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US1956626A
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US2086934A
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US2020861A
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US2283797A
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US2806704A
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US2997451A
Cited
US2993234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |