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US2491884A
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Pipe coupling device
Assignee: James H Lamont & Co Ltd
•
Filing: 1946-10-28
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Granted: 1949-12-20
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Expires: 1966-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert S West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:28
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/04; F16L19/05; F16L19/055
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920512A
Cited
US2427260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |