US2914975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for cold metal reduction
Assignee: PennzEnergy Co
•
Filing: 1953-05-18
•
Granted: 1959-12-01
•
Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 George S Cavanaugh
- 👤 William G Barworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:37
CPC Classifications
C; C10; C10M; C10M173/00; B; B21; B21B; B21B27/00; B21B27/06; B21B27/10; B21B45/00; B21B45/002; B21B45/02; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2420602A
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US2590451A
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US2632347A
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US2632734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |