US3028475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination heater, ventilator and light fixture
Assignee: VENTROLA Manufacturing Co
•
Filing: 1959-10-12
•
Granted: 1962-04-03
•
Expires: 1979-10-12
Abstract
No abstract record available.
Inventors
- 👤 Albert E Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2027605A
Cited
US2514528A
Cited
US2619578A
Cited
US2565769A
Cited
US2689906A
Cited
US2870319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |