US2528720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning apparatus for heating and cooling
Assignee: Individual
•
Filing: 1946-07-03
•
Granted: 1950-11-07
•
Expires: 1966-07-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Binder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:43
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/86; F24F1/00; F24F1/02; F24F1/032; F24F1/0323; F24F1/0358; F24F1/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2153696A
Cited
US2191622A
Cited
US2022523A
Cited
US2299939A
Cited
US2438120A
Cited
US2405812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |