US2437567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens edge grinder
Assignee: UHLEMANN OPTICAL CO
•
Filing: 1946-07-10
•
Granted: 1948-03-09
•
Expires: 1966-07-10
Abstract
No abstract record available.
Inventors
- 👤 Uhlemann Richard Colbernt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US615089A
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US670500A
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US1659964A
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US1619358A
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US1662157A
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US1713622A
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US1991231A
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US2166037A
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US2144205A
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US2246055A
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US2183962A
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US2357154A
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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) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |