Patent US1097709A successfully refreshed from Google Patents.
US1097709A
Expired / Lapsed
US
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Drilling apparatus.
Assignee: Individual
•
Filing: 1913-08-29
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Granted: 1914-05-26
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Expires: 1933-08-29
Abstract
No abstract record available.
Inventors
- 👤 Otto C Fosselman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:24
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0057; Y; Y10; Y10T; Y10T408/00; Y10T408/55; Y10T408/561; Y10T408/5619
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) | 1917-05-25 | 1917-11-24 | 1918-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-05-25 | 1921-11-24 | 1922-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-05-25 | 1925-11-24 | 1926-05-26 | $7700.00 | Window Closed / Lapsed |