Patent US1135530A successfully refreshed from Google Patents.
US1135530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal and rock drill.
Assignee: Individual
•
Filing: 1911-01-05
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Granted: 1915-04-13
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Expires: 1931-01-05
Abstract
No abstract record available.
Inventors
- 👤 Pearson Jopling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:49
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1092
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) | 1918-04-12 | 1918-10-12 | 1919-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-04-12 | 1922-10-12 | 1923-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-04-12 | 1926-10-12 | 1927-04-13 | $7700.00 | Window Closed / Lapsed |