US2396945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal cutting bit and holder therefor
Assignee: FRANK PROX CO Inc
•
Filing: 1943-01-27
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Granted: 1946-03-19
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Expires: 1963-01-27
Abstract
No abstract record available.
Inventors
- 👤 Frank L Fulke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:18
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/193; E21C35/1936; C; C10; C10M; C10M135/00; C10M135/02; C10M159/00; C10M159/12; C10M159/123; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/40; C10M2207/404; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/10; C10N; C10N2040/00; C10N2040/20; C10N2040/22
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) | 1949-03-18 | 1949-09-17 | 1950-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-18 | 1953-09-17 | 1954-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-18 | 1957-09-17 | 1958-03-19 | $7700.00 | Window Closed / Lapsed |