US2403928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition
Assignee: Sinclair Refining Co
•
Filing: 1945-08-09
•
Granted: 1946-07-16
•
Expires: 1965-08-09
Abstract
No abstract record available.
Inventors
- 👤 Milton P Kleinholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/04; C10M2207/044; C10M2207/28; C10M2207/287; C10N; C10N2040/00; C10N2040/08; C10N2040/135
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) | 1949-07-15 | 1950-01-14 | 1950-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-15 | 1954-01-14 | 1954-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-15 | 1958-01-14 | 1958-07-16 | $7700.00 | Window Closed / Lapsed |