US2966347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater unit
Assignee: AEROVENT FAN CO Inc
•
Filing: 1958-12-22
•
Granted: 1960-12-27
•
Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Wolffradt Carl H Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US883880A
Cited
US1406925A
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US1922348A
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US2263170A
Cited
US2853284A
Cited
US2869626A
Cited
US2846816A
Cited
US2841694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |