US2788231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit coupling having internal fluid expansible seal
Assignee: Individual
•
Filing: 1953-07-03
•
Granted: 1957-04-09
•
Expires: 1973-07-03
Abstract
No abstract record available.
Inventors
- 👤 Howard M Crow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:44
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/02; F16L37/04; F16L37/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1843191A
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US1988198A
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US2090719A
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US2202459A
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US2366814A
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US2392085A
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US2529098A
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US2583694A
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US2703721A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |