US1748121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser for refrigerating plants
Assignee: Individual
•
Filing: 1928-01-24
•
Granted: 1930-02-25
•
Expires: 1948-01-24
Abstract
No abstract record available.
Inventors
- 👤 Norman H Gay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:39
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/0282; F25; F25B; F25B39/00; F25B39/04; F28F25/00; F28F25/02; F25B2339/00; F25B2339/04; F25B2339/041; F28D; F28D21/00; F28D2021/0019; F28D2021/0068; F28D2021/007; Y; Y10; Y10S; Y10S165/00; Y10S165/163; Y10S165/172; Y10S165/175
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-02-24 | 1933-08-26 | 1934-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-02-24 | 1937-08-26 | 1938-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-02-24 | 1941-08-26 | 1942-02-25 | $7700.00 | Window Closed / Lapsed |