Patent US755238A successfully refreshed from Google Patents.
US755238A
Expired / Lapsed
US
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Machinery for cutting coal or other minerals.
Assignee: Individual
•
Filing: 1902-10-21
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Granted: 1904-03-22
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Expires: 1922-10-21
Abstract
No abstract record available.
Inventors
- 👤 Henry Copson Peake
- 👤 John Robert English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:32
CPC Classifications
E; E21; E21C; E21C31/00; E21C31/10
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) | 1907-03-22 | 1907-09-21 | 1908-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-03-22 | 1911-09-21 | 1912-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-03-22 | 1915-09-21 | 1916-03-22 | $7700.00 | Window Closed / Lapsed |