US3151889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling having centering means
Assignee: Individual
•
Filing: 1959-12-08
•
Granted: 1964-10-06
•
Expires: 1979-12-08
Abstract
No abstract record available.
Inventors
- 👤 Petrin Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:09
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/02; F16L19/0231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US199784A
Cited
US342305A
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US1506564A
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US1703696A
Cited
US2211776A
Cited
US2253018A
Cited
US2570224A
Cited
US2761702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |