Patent US1881982A successfully refreshed from Google Patents.
US1881982A
Expired / Lapsed
US
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Eyeglass lens
Assignee: RICHARD H UHLEMANN
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Filing: 1928-06-27
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Granted: 1932-10-11
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Expires: 1948-06-27
Abstract
No abstract record available.
Inventors
- 👤 William R Uhlemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:03
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/06; B; B24; B24B; B24B13/00; B24B13/0012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-10-11 | 1936-04-11 | 1936-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-11 | 1940-04-11 | 1940-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-11 | 1944-04-11 | 1944-10-11 | $7700.00 | Window Closed / Lapsed |