Patent US3107326A successfully refreshed from Google Patents.
US1686516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Setting for eyeglasses
Assignee: Individual
•
Filing: 1927-01-12
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Granted: 1928-10-09
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Expires: 1947-01-12
Abstract
No abstract record available.
Inventors
- 👤 Christensen Alfred Hein Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A62; A62B; A62B18/00; A62B18/08; A62B18/082
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) | 1931-10-09 | 1932-04-09 | 1932-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-10-09 | 1936-04-09 | 1936-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-10-09 | 1940-04-09 | 1940-10-09 | $7700.00 | Window Closed / Lapsed |