Patent US953879A successfully refreshed from Google Patents.
US953879A
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US
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Attachment for lenses.
Assignee: Individual
•
Filing: 1909-04-21
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Granted: 1910-04-05
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Expires: 1929-04-21
Abstract
No abstract record available.
Inventors
- 👤 Frank Ulric Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:29
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/14; G02B15/142
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) | 1913-04-04 | 1913-10-04 | 1914-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-04-04 | 1917-10-04 | 1918-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-04-04 | 1921-10-04 | 1922-04-05 | $7700.00 | Window Closed / Lapsed |