US2496720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater fan mounting
Assignee: Individual
•
Filing: 1946-09-09
•
Granted: 1950-02-07
•
Expires: 1966-09-09
Abstract
No abstract record available.
Inventors
- 👤 Sidney J Heiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/624; F04D29/626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US809356A
Cited
US1408649A
Cited
US1938799A
Cited
US1875685A
Cited
US2028985A
Cited
US1992112A
Cited
US2191418A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |