US2632288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens grinding and polishing machine
Assignee: Individual
•
Filing: 1951-02-02
•
Granted: 1953-03-24
•
Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 Alfred I Diller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:13
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/02; B24B13/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US556919A
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US1302908A
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US1260361A
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US1359545A
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US1630253A
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US1998603A
Cited
US2294184A
Cited
US2402305A
Cited
US2427064A
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US2528952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |