US2544769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fume and vapor control for cleansing tanks
Assignee: Scovill Inc
•
Filing: 1945-12-29
•
Granted: 1951-03-13
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Roger S Sperry
- 👤 Rietdyke Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:08
CPC Classifications
F; F24; F24F; F24F9/00; C; C23; C23G; C23G3/00; D; D06; D06F; D06F43/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1254725A
Cited
US1539973A
Cited
US1738641A
Cited
US2074317A
Cited
GB491033A
Cited
US2257516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |