US2939729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick disconnect coupling
Assignee: PREFERRED ENGINEERING AND RES
•
Filing: 1958-04-09
•
Granted: 1960-06-07
•
Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Bernard T O'shaughnessy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:23
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/0842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733938A
Cited
US1587079A
Cited
US1734236A
Cited
US2111956A
Cited
US2127086A
Cited
US2248269A
Cited
US2701147A
Cited
US2702200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |