Patent US1819760A successfully refreshed from Google Patents.
US1819760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of gas and low-boiling fractions from petroleum products
Assignee: Standard Oil Co
•
Filing: 1927-03-09
•
Granted: 1931-08-18
•
Expires: 1947-03-09
Abstract
No abstract record available.
Inventors
- 👤 Walter G Whitman
- 👤 Clarke C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:07
CPC Classifications
C; C10; C10G; C10G7/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-08-17 | 1935-02-16 | 1935-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-17 | 1939-02-16 | 1939-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-17 | 1943-02-16 | 1943-08-18 | $7700.00 | Window Closed / Lapsed |