US3372939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary face seal with vibration damping means
Assignee: Beazer East Inc
•
Filing: 1965-10-22
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Granted: 1968-03-12
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Coulombe
- 👤 Ernest J Taschenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:39
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16J15/363; F16J15/366; Y; Y10; Y10S; Y10S277/00; Y10S277/916
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA467916A
Cited
US1822052A
Cited
US1860860A
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US2601996A
Cited
US2740648A
Cited
US2862521A
Cited
US2911266A
Cited
US3213764A
Cited
US3276780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |