US2652699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windmill and heat pump set
Assignee: Individual
•
Filing: 1949-10-08
•
Granted: 1953-09-22
•
Expires: 1969-10-08
Abstract
No abstract record available.
Inventors
- 👤 Romani Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:09
CPC Classifications
F; F03; F03D; F03D9/00; F03D9/20; F03D9/22; F03D13/00; F03D13/20; F03D9/25; F25; F25B; F25B27/00; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/728
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US903935A
Cited
US996334A
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US1212586A
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US1369596A
Cited
US2339903A
Cited
US2388314A
Cited
US2398655A
Cited
US2454058A
Cited
US2474304A
Cited
US2461449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |