US2973554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for use in the production of a helical row of coupling links
Assignee: Individual
•
Filing: 1957-09-27
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Granted: 1961-03-07
•
Expires: 1977-09-27
Abstract
No abstract record available.
Inventors
- 👤 Hansen Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:01
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/10; A44B19/12; B; B21; B21D; B21D53/00; B21D53/46; B21D53/50; Y; Y10; Y10S; Y10S425/00; Y10S425/814
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |