US3398977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling
Assignee: Individual
•
Filing: 1966-10-07
•
Granted: 1968-08-27
•
Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Yoneda Rikizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:53
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)
US2912262A
Cited
US2906552A
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US2901269A
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US3089713A
Cited
US3075792A
Cited
US1509651A
Cited
US1587079A
Cited
US2438107A
Cited
US2579972A
Cited
US2702200A
Cited
DE957704C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |