US1284945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-still.
Assignee: SWAN PROCESS OIL Co
•
Filing: 1917-04-28
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Granted: 1918-11-12
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Expires: 1937-04-28
Abstract
No abstract record available.
Inventors
- 👤 Oliver C Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:45
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/40; Y; Y10; Y10S; Y10S159/00; Y10S159/04
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) | 1921-11-11 | 1922-05-13 | 1922-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-11-11 | 1926-05-13 | 1926-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-11-11 | 1930-05-13 | 1930-11-12 | $7700.00 | Window Closed / Lapsed |