Patent US3509624A successfully refreshed from Google Patents.
US3473829A
Expired / Lapsed
US
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Inflatable connector
Assignee: FRONTIER INSULATION AND ASBESTOS Inc
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Filing: 1967-05-08
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Granted: 1969-10-21
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Expires: 1987-05-08
Abstract
No abstract record available.
Inventors
- 👤 Dennis Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:20
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE29727C
Cited
US829546A
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US2430873A
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US2700196A
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US2761536A
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FR1106161A
Cited
US2814841A
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US3191727A
Cited
US3316681A
Cited
US3258271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |