US807064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens-drilling machine.
Assignee: American Optical Corp
•
Filing: 1905-03-25
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Granted: 1905-12-12
•
Expires: 1925-03-25
Abstract
No abstract record available.
Inventors
- 👤 George H Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:11
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/14; B28D1/143; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5614; Y10T408/5616
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) | 1908-12-11 | 1909-06-12 | 1909-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-12-11 | 1913-06-12 | 1913-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-12-11 | 1917-06-12 | 1917-12-12 | $7700.00 | Window Closed / Lapsed |