US2340247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic lubricant
Assignee: ExxonMobil Oil Corp
•
Filing: 1940-11-27
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Granted: 1944-01-25
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Expires: 1960-11-27
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Gordon D Byrkit
- 👤 Waldo L Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:18
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/22; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/142; C10M2207/28; C10M2207/284; C10M2207/285; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2227/00; C10M2227/08; C10M2227/081; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2040/00; C10N2040/25; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-01-24 | 1947-07-26 | 1948-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-24 | 1951-07-26 | 1952-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-24 | 1955-07-26 | 1956-01-25 | $7700.00 | Window Closed / Lapsed |