Patent US905490A successfully refreshed from Google Patents.
US905490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal or rock drilling machine.
Assignee: Sullivan Machinery Co
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Filing: 1904-01-14
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Granted: 1908-12-01
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Expires: 1924-01-14
Abstract
No abstract record available.
Inventors
- 👤 Albert Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:19
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/025
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) | 1911-12-01 | 1912-06-01 | 1912-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-12-01 | 1916-06-01 | 1916-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-12-01 | 1920-06-01 | 1920-12-01 | $7700.00 | Window Closed / Lapsed |