US2790229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for processing metal strip
Assignee: Youngstown Foundry and Machine Co
•
Filing: 1952-05-27
•
Granted: 1957-04-30
•
Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 Axel S Hellstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:45
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/26; B21B; B21B45/00; B21B45/04; B21B45/06; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4517
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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |