US975905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammer-drill.
Assignee: Ingersoll Rand Co
•
Filing: 1909-02-19
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Granted: 1910-11-15
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Expires: 1929-02-19
Abstract
No abstract record available.
Inventors
- 👤 Albert H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
E; E21; E21B; E21B6/00; E21B6/02; Y; Y10; Y10S; Y10S277/00; Y10S277/907; Y10T; Y10T279/00; Y10T279/17; Y10T279/17042; Y10T279/17094; Y10T279/17102; Y10T279/17111
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) | 1913-11-14 | 1914-05-16 | 1914-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-11-14 | 1918-05-16 | 1918-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-11-14 | 1922-05-16 | 1922-11-15 | $7700.00 | Window Closed / Lapsed |