Patent US3486582A successfully refreshed from Google Patents.
US3486582A
Expired / Lapsed
US
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Lubrication system for a gas turbine engine
Assignee: Caterpillar Inc
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Filing: 1967-10-30
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Granted: 1969-12-30
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Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Carl W Carter
- 👤 Lloyd E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:25
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18; F01D25/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1799271A
Cited
US1906538A
Cited
GB493553A
Cited
US2374822A
Cited
US2408914A
Cited
US2512189A
Cited
US2493350A
Cited
US3045419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |