US1750941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal breaker
Assignee: Individual
•
Filing: 1925-07-07
•
Granted: 1930-03-18
•
Expires: 1945-07-07
Abstract
No abstract record available.
Inventors
- 👤 Pardee Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:38
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/06; B02C18/16; B02C18/18; B02C18/186; B02C18/14
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) | 1933-03-17 | 1933-09-16 | 1934-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-03-17 | 1937-09-16 | 1938-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-03-17 | 1941-09-16 | 1942-03-18 | $7700.00 | Window Closed / Lapsed |