Patent US3092771A successfully refreshed from Google Patents.
Patent US3394941A successfully refreshed from Google Patents.
US3394941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing ring assembly
Assignee: W S SHAMBAN AND Co
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Filing: 1965-10-21
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Granted: 1968-07-30
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Henry A Traub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:52
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/935; Y10S277/936; Y10S277/944; Y10S277/945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |