Patent US2789344A successfully refreshed from Google Patents.
US2789344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cold shaping tubular steel articles and product
Assignee: American Radiator and Standard Sanitary Corp
•
Filing: 1951-04-23
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Granted: 1957-04-23
•
Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Kaul Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:55
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/02; B21C23/03
Claims Analysis
Total Claims: 0
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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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |