US2579039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating system
Assignee: US Electrical Motors Inc
•
Filing: 1948-04-03
•
Granted: 1951-12-18
•
Expires: 1968-04-03
Abstract
No abstract record available.
Inventors
- 👤 William M Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:47
CPC Classifications
F; F16; F16N; F16N19/00; F16N19/006; F16N7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US918453A
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US1122607A
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US1096658A
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US1256020A
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US1433613A
Cited
FR800604A
Cited
US2242262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |