US679693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined drill and countersink.
Assignee: GEORGE B UPDEGRAFF
•
Filing: 1901-04-13
•
Granted: 1901-07-30
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Expires: 1921-04-13
Abstract
No abstract record available.
Inventors
- 👤 William Burkhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:53
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/10; B23B51/108; B23B51/1085; Y; Y10; Y10T; Y10T408/00; Y10T408/86; Y10T408/87; Y10T408/8725; Y10T408/89; Y10T408/892; Y10T408/8925
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) | 1904-07-29 | 1905-01-28 | 1905-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1908-07-29 | 1909-01-28 | 1909-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1912-07-29 | 1913-01-28 | 1913-07-30 | $7700.00 | Window Closed / Lapsed |