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US915320A
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Gasolene-operating rock-drilling engine.
Assignee: Individual
•
Filing: 1906-09-04
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Granted: 1909-03-16
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Expires: 1926-09-04
Abstract
No abstract record available.
Inventors
- 👤 Rolland S Trott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:20
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/08; F16H25/12; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312
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) | 1912-03-15 | 1912-09-14 | 1913-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-15 | 1916-09-14 | 1917-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-15 | 1920-09-14 | 1921-03-16 | $7700.00 | Window Closed / Lapsed |