US2738933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jaw crushers
Assignee: Individual
•
Filing: 1953-01-06
•
Granted: 1956-03-20
•
Expires: 1973-01-06
Abstract
No abstract record available.
Inventors
- 👤 Frank H Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:03
CPC Classifications
B; B02; B02C; B02C1/00; B02C1/02; B02C1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US122832A
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US223281A
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US539092A
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US657958A
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AT7494B
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US1346871A
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FR750087A
Cited
US1994224A
Cited
FR868256A
Cited
US2485718A
Cited
US2631785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |