US2223168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of removing spray residues
Assignee: National Oil Products Co
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Filing: 1938-04-05
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Granted: 1940-11-26
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Expires: 1958-04-05
Abstract
No abstract record available.
Inventors
- 👤 Bernard A Dombrow
- 👤 Louis T Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:56
CPC Classifications
A; A23; A23N; A23N12/00; A23N12/02; A23B; A23B7/00; A23B7/10; A23B7/14; A23B7/153; A23B7/154
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) | 1943-11-26 | 1944-05-27 | 1944-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-26 | 1948-05-27 | 1948-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-26 | 1952-05-27 | 1952-11-26 | $7700.00 | Window Closed / Lapsed |