US1359453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-purifying apparatus for hydrocarbon-engines
Assignee: Individual
•
Filing: 1920-05-17
•
Granted: 1920-11-16
•
Expires: 1940-05-17
Abstract
No abstract record available.
Inventors
- 👤 James A Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:06
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/02; Y; Y10; Y10S; Y10S55/00; Y10S55/28
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) | 1923-11-16 | 1924-05-17 | 1924-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-11-16 | 1928-05-17 | 1928-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-11-16 | 1932-05-17 | 1932-11-16 | $7700.00 | Window Closed / Lapsed |