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US117237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in countersinks
Assignee: —
•
Filing: —
•
Granted: 1871-07-25
•
Expires: 1888-07-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:15
CPC Classifications
B; B23; B23B; B23B51/00; B27; B27G; B27G15/00; Y; Y10; Y10T; Y10T408/00; Y10T408/89; Y10T408/909; Y10T408/9095
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) | 1874-07-24 | 1875-01-23 | 1875-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1878-07-24 | 1879-01-23 | 1879-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1882-07-24 | 1883-01-23 | 1883-07-25 | $7700.00 | Window Closed / Lapsed |