US2297909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lubrication and of treating gears
Assignee: Standard Oil Co
•
Filing: 1936-04-14
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Granted: 1942-10-06
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Expires: 1956-04-14
Abstract
No abstract record available.
Inventors
- 👤 Neely George Leonard
- 👤 Bruce B Farrington
- 👤 Victor N Borsoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:22
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/041; C; C23; C23C; C23C22/00; C23C22/02; F16H55/00; F16H55/02; F16H55/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987
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) | 1945-10-05 | 1946-04-06 | 1946-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-05 | 1950-04-06 | 1950-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-05 | 1954-04-06 | 1954-10-06 | $7700.00 | Window Closed / Lapsed |