US2678609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating and sealing means
Assignee: EMSCO Manufacturing Co
•
Filing: 1949-10-29
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Granted: 1954-05-18
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Albert A Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:40
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/02; F04B53/00; F04B53/16; F04B53/162; F04B53/164; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US274500A
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US1546596A
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US1483143A
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US1456014A
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FR587846A
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FR609606A
Cited
US2081224A
Cited
US2079922A
Cited
US2348004A
Cited
US2470960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |