US2177971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mill for hot rolling strip
Assignee: Individual
•
Filing: 1937-05-21
•
Granted: 1939-10-31
•
Expires: 1957-05-21
Abstract
No abstract record available.
Inventors
- 👤 Worthington Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:11
CPC Classifications
B; B21; B21B; B21B45/00; B21B45/004; B21B1/00; B21B1/22; B21B1/30; B21B1/32; B21B1/34; B21B13/00; B21B13/02; B21B13/04; B21B27/00; B21B27/06; B21B27/08; B21B2027/083; B21B39/00; B21B39/02; B21B39/12; B21B39/14; B21B39/18; B21B41/00; B21B41/06; B21B45/008; B21B45/04; B21B45/08; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |