US2992018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self locking threaded coupling
Assignee: Rosan Engineering Corp
•
Filing: 1957-06-03
•
Granted: 1961-07-11
•
Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 Rosan Jose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:55
CPC Classifications
F; F16; F16L; F16L5/00; F16L19/00; F16L19/005; F16L19/04; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/964; Y10T; Y10T403/00; Y10T403/34
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |