US867639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twist-drill.
Assignee: Individual
•
Filing: 1906-05-21
•
Granted: 1907-10-08
•
Expires: 1926-05-21
Abstract
No abstract record available.
Inventors
- 👤 George J Bragg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:41
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/0002; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/1715; Y10T407/172; Y10T408/00; Y10T408/89; Y10T408/905
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) | 1910-10-07 | 1911-04-08 | 1911-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-10-07 | 1915-04-08 | 1915-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-10-07 | 1919-04-08 | 1919-10-08 | $7700.00 | Window Closed / Lapsed |