Patent US2302907A successfully refreshed from Google Patents.
US2302907A
Expired / Lapsed
US
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Lubricating and sealing drain device
Assignee: Tokheim Oil Tank & Pump Co
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Filing: 1939-04-24
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Granted: 1942-11-24
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Expires: 1959-04-24
Abstract
No abstract record available.
Inventors
- 👤 Frank B Eilers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:07
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3464; F16N; F16N31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-11-23 | 1946-05-25 | 1946-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-23 | 1950-05-25 | 1950-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-23 | 1954-05-25 | 1954-11-24 | $7700.00 | Window Closed / Lapsed |