Patent US3420335A successfully refreshed from Google Patents.
US3420335A
Expired / Lapsed
US
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Lubrication system for electric machines
Assignee: General Electric Co
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Filing: 1967-02-28
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Granted: 1969-01-07
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Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Richard W Dochterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:25
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2571672A
Cited
US2633393A
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US2752208A
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US3243241A
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US3250579A
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US3264045A
Cited
US3361496A
Cited
US3336092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |