US2818279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lugged pipe coupling with positive lock means
Assignee: RICO ENTERPRISES Inc
•
Filing: 1953-12-03
•
Granted: 1957-12-31
•
Expires: 1973-12-03
Abstract
No abstract record available.
Inventors
- 👤 Marion A Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:50
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/10; F16L37/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1029613A
Cited
US1487696A
Cited
US2298117A
Cited
US2333243A
Cited
US2529821A
Cited
US2613089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |