US2722107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
House cooling system
Assignee: Individual
•
Filing: 1952-04-08
•
Granted: 1955-11-01
•
Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Frazer W Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:10
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/001; F24D; F24D11/00; F24D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969187A
Cited
US2295983A
Cited
US2428312A
Cited
US2428876A
Cited
US2495861A
Cited
US2513373A
Cited
US2529154A
Cited
US2575478A
Cited
US2581744A
Cited
US2584573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |