US1590261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock-drill valve
Assignee: Ingersoll Rand Co
•
Filing: 1925-06-30
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Granted: 1926-06-29
•
Expires: 1945-06-30
Abstract
No abstract record available.
Inventors
- 👤 William A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:00
CPC Classifications
B; B25; B25D; B25D9/00; B25D9/14; B25D9/16; B25D9/20; B25D2209/00; B25D2209/007
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) | 1929-06-28 | 1929-12-28 | 1930-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-06-28 | 1933-12-28 | 1934-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-06-28 | 1937-12-28 | 1938-06-29 | $7700.00 | Window Closed / Lapsed |