US2491441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water resisting grease
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-03-11
•
Granted: 1949-12-13
•
Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Richard A Butcosk
- 👤 Ernest T White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/20; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1780315A
Cited
US2111907A
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US2394790A
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US2398075A
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US2417264A
Cited
US2399063A
Cited
US2409950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |