US2874978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling having a manually operated latching means
Assignee: FMC Corp
•
Filing: 1955-03-02
•
Granted: 1959-02-24
•
Expires: 1975-03-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Stilwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:15
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/50; F16L37/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1016620A
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US1328399A
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US1651522A
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US1824792A
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US1902697A
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US2440452A
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US2556659A
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US2638362A
Cited
US2565572A
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FR1083873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |