US2649685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon monoxide eliminator
Assignee: Individual
•
Filing: 1949-08-04
•
Granted: 1953-08-25
•
Expires: 1969-08-04
Abstract
No abstract record available.
Inventors
- 👤 Cohen Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:42
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/0892; F01N3/10; F01N3/24; F01N3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1605484A
Cited
US1843999A
Cited
FR631736A
Cited
FR636038A
Cited
DE580807C
Cited
GB386901A
Cited
US2216653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |