US2767462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of retractively expanding tubes into tube seats
Assignee: Airetool Manufacturing Co
•
Filing: 1954-01-27
•
Granted: 1956-10-23
•
Expires: 1974-01-27
Abstract
No abstract record available.
Inventors
- 👤 Harold C Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:02
CPC Classifications
F; F22; F22G; F22G3/00; F22G3/009; B; B21; B21D; B21D39/00; B21D39/06; B21D39/08; B21D39/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/4994
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) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |