US2691280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system and drying means therefor
Assignee: Individual
•
Filing: 1952-08-04
•
Granted: 1954-10-12
•
Expires: 1972-08-04
Abstract
No abstract record available.
Inventors
- 👤 James A Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
F; F25; F25B; F25B43/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US992829A
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US1580591A
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US1555231A
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GB363902A
Cited
US1871546A
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US2073952A
Cited
US2190138A
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US2365526A
Cited
US2372314A
Cited
US2430692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |