Patent US3540762A successfully refreshed from Google Patents.
US3540762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented thread coupling
Assignee: JERALD V DUNLAP
•
Filing: 1968-08-16
•
Granted: 1970-11-17
•
Expires: 1988-08-16
Abstract
No abstract record available.
Inventors
- 👤 Jerald V Dunlap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:30
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/10; F16L37/105; A; A62; A62C; A62C33/00; A62C33/06; F16L37/24; F16L37/244; F16L37/2445
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |