Patent US3526409A successfully refreshed from Google Patents.
US3526409A
Expired / Lapsed
US
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Sealing device
Assignee: FMC Corp
•
Filing: 1967-09-12
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Granted: 1970-09-01
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Expires: 1987-09-12
Abstract
No abstract record available.
Inventors
- 👤 Leonard C Heinlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:04
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/784; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C23/00; F16C23/06; F16C23/08; F16C23/082; F16C23/084; F16C2300/00; F16C2300/02; F16C33/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1262172A
Cited
US2101013A
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US2237616A
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US2619369A
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US2530052A
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US2706123A
Cited
US2688521A
Cited
US3245735A
Cited
US3301568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |