US2927371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously forming welded coated steel tubing
Assignee: Armco Inc
•
Filing: 1953-01-23
•
Granted: 1960-03-08
•
Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 Hays Noble Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:50
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/163; B23K11/166; B21; B21C; B21C37/00; B21C37/06; B21C37/08; B21C37/09; B23K11/06; B23K11/061; B23K11/062; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/4998; Y10T29/49982; Y10T29/49986; Y10T29/49993
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) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |