US2316739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of tetraethyl lead and a motor fuel containing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1941-02-24
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Granted: 1943-04-13
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Expires: 1961-02-24
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Cook
- 👤 Jr William D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24; C10; C10L; C10L1/00; C10L1/10; C10L1/103
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) | 1946-04-12 | 1946-10-12 | 1947-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-12 | 1950-10-12 | 1951-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-12 | 1954-10-12 | 1955-04-13 | $7700.00 | Window Closed / Lapsed |