US738656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of desulfurizing crude petroleum.
Assignee: LAYTON O SHERMAN
•
Filing: 1903-02-27
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Granted: 1903-09-08
•
Expires: 1923-02-27
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Burwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:38
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
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) | 1906-09-07 | 1907-03-09 | 1907-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1910-09-07 | 1911-03-09 | 1911-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1914-09-07 | 1915-03-09 | 1915-09-08 | $7700.00 | Window Closed / Lapsed |