US2372797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products
Assignee: National Oil Products Co
•
Filing: 1940-01-26
•
Granted: 1945-04-03
•
Expires: 1960-01-26
Abstract
No abstract record available.
Inventors
- 👤 Segessemann Ernest
- 👤 William L Abramowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:32
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/405; C; C11; C11C; C11C3/00; D06M13/432; C10; C10M; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10N; C10N2040/00; C10N2040/46; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
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) | 1948-04-02 | 1948-10-02 | 1949-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-02 | 1952-10-02 | 1953-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-02 | 1956-10-02 | 1957-04-03 | $7700.00 | Window Closed / Lapsed |