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US2953676A
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Assignee: POLYOPTIC Corp
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Filing: 1957-09-03
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Granted: 1960-09-20
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Expires: 1977-09-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Glasser
- 👤 Apatoff William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:11
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB304854A
Cited
US2041412A
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US2099034A
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US2297240A
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US2438196A
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US2443510A
Cited
US2721256A
Cited
US2748263A
Cited
US2831394A
Cited
US2798939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |