Patent US3420554A successfully refreshed from Google Patents.
US3420554A
Expired / Lapsed
US
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Coupling having inflatable clamping means
Assignee: Individual
•
Filing: 1965-11-22
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Granted: 1969-01-07
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Immanuel Straub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:18
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/10; B; B21; B21D; B21D39/00; B21D39/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2226304A
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US2259543A
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GB556010A
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US2465848A
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US2451354A
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US2504936A
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US2523716A
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US2660458A
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US3023995A
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FR1241634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |