US2836471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for cooling lubricant
Assignee: US Electrical Motors Inc
•
Filing: 1954-07-16
•
Granted: 1958-05-27
•
Expires: 1974-07-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick O Luenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:45
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/173; H02K5/1732; F; F16; F16C; F16C37/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1396327A
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US1584174A
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US1945833A
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US2014661A
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US2314703A
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US2393808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |