Patent US3511511A successfully refreshed from Google Patents.
US3511511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lip-type cartridge seal having separate axial and radial spring systems
Assignee: Rex Chainbelt Inc
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Filing: 1968-01-16
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Granted: 1970-05-12
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Expires: 1988-01-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Voitik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:45
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE523149A
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US1931733A
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US2877029A
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US3009717A
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US3068016A
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US3016251A
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US3055666A
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US3306620A
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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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |