Patent US2944448A successfully refreshed from Google Patents.
US2944448A
Expired / Lapsed
US
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Cam operated forging machine
Assignee: Canadian Ingersoll Rand Co Ltd
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Filing: 1952-07-30
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Granted: 1960-07-12
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Expires: 1972-07-30
Abstract
No abstract record available.
Inventors
- 👤 Braatz Willia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:12
CPC Classifications
B; B21; B21J; B21J7/00; B21J7/02; B21J7/14; B21J7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2058556A
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US2126923A
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US2375481A
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US2331477A
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US2381559A
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US2617319A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |