US2522410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration apparatus
Assignee: Servel Inc
•
Filing: 1944-10-25
•
Granted: 1950-09-12
•
Expires: 1964-10-25
Abstract
No abstract record available.
Inventors
- 👤 Bank The National City
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:38
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/046; F25B15/00; F25B15/02; F25B15/06; F25B2315/00; F25B2315/001; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US973609A
Cited
US1162731A
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US1212244A
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US1909076A
Cited
GB387028A
Cited
US2363381A
Cited
US2353859A
Cited
US2344245A
Cited
US2363440A
Cited
US2470756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |