US2914974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for cold metal reduction
Assignee: PennzEnergy Co
•
Filing: 1952-05-12
•
Granted: 1959-12-01
•
Expires: 1972-05-12
Abstract
No abstract record available.
Inventors
- 👤 George S Cavanaugh
- 👤 William G Barworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:15
CPC Classifications
C; C10; C10M; C10M173/00; B; B21; B21B; B21B45/00; B21B45/02; B21B45/0239; B21B45/0242; B21C; B21C9/00; B21B27/00; B21B27/06; B21B27/10; B21B45/0203; B21B45/0206; B21B45/0245; B21B45/0248; B21B45/0251; B21B45/0269; B21B45/029; B21B45/0296; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/40; C10M2219/00; C10M2219/04; C10M2219/042; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/244; C10N2040/246; C10N2050/00; C10N2050/10; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 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 |