US2659583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drop hammer and carriage therefor
Assignee: OTTAWA STEEL PRODUCTS Inc
•
Filing: 1950-01-16
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Granted: 1953-11-17
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Expires: 1970-01-16
Abstract
No abstract record available.
Inventors
- 👤 Evan E Dorkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:03
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/02; E02D7/06; E02D7/08; B; B02; B02C; B02C1/00; B02C1/14; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2135769A
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US2121480A
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US2179316A
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US2174415A
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US2335172A
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US2410959A
Cited
US2445260A
Cited
US2476390A
Cited
US2573640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |