US2610484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact refrigeration unit for cooling air
Assignee: BETZ Corp
•
Filing: 1950-01-13
•
Granted: 1952-09-16
•
Expires: 1970-01-13
Abstract
No abstract record available.
Inventors
- 👤 Henry J Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:21
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/067; F28; F28D; F28D1/00; F28D1/02; F28D2001/0253; F28D2001/026; F28D2001/0273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1687240A
Cited
US1853333A
Cited
US2242337A
Cited
US2405411A
Cited
FR903785A
Cited
US2486145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |