Patent US2919937A successfully refreshed from Google Patents.
US2919937A
Expired / Lapsed
US
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Pipe coupling having inflated sealing means
Assignee: Federal Mogul Bower Bearings Inc
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Filing: 1956-07-30
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Granted: 1960-01-05
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Dovey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:41
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L17/00; F16L17/06; F16L17/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE70652C
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DE61739C
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US31806A
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GB189419766A
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US872463A
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US1051805A
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US1589469A
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US2057645A
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US2104799A
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US2451941A
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US2541512A
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FR943835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |