US2893305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating hood
Assignee: Preway Inc
•
Filing: 1956-05-23
•
Granted: 1959-07-07
•
Expires: 1976-05-23
Abstract
No abstract record available.
Inventors
- 👤 Kenneth S Jenson
- 👤 Roth Mathias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1825245A
Cited
US2077496A
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US2226641A
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US2487607A
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US2621755A
Cited
US2596874A
Cited
US2710573A
Cited
US2780981A
Cited
US2800849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-06 | 1963-01-05 | 1963-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-06 | 1967-01-05 | 1967-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-06 | 1971-01-05 | 1971-07-07 | $7700.00 | Window Closed / Lapsed |