Patent US2955390A successfully refreshed from Google Patents.
US2955390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens grinding machine or generator
Assignee: Individual
•
Filing: 1956-07-20
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Granted: 1960-10-11
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Edwin D Philips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:49
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/0012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1487024A
Cited
US1741021A
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US1598766A
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US2187240A
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US2198765A
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US2278314A
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US2291000A
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US2392478A
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US2688220A
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US2704424A
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US2649667A
Cited
US2747339A
Cited
US2806327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |