US2720083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling system and method
Assignee: Frick Co Inc
•
Filing: 1950-12-08
•
Granted: 1955-10-11
•
Expires: 1970-12-08
Abstract
No abstract record available.
Inventors
- 👤 Milton W Garland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:59
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/133; F; F25; F25B; F25B29/00; F25B29/003; F25B1/00; F25B1/10; F25B2400/00; F25B2400/04; F25B2400/0403; F25B2400/16; F25B41/00; F25B5/00; F25B6/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |