US2506448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature and humidity controlled refrigerating apparatus
Assignee: Individual
•
Filing: 1945-03-15
•
Granted: 1950-05-02
•
Expires: 1965-03-15
Abstract
No abstract record available.
Inventors
- 👤 Gregor Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:32
CPC Classifications
F; F25; F25D; F25D25/00; F25D17/00; F25D17/04; F25D17/06; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0413; F25D2317/04131; F25D2317/06; F25D2317/066; F25D2317/0664; F25D2400/00; F25D2400/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US191729A
Cited
US657929A
Cited
US1667315A
Cited
US1859613A
Cited
US2060065A
Cited
US2259007A
Cited
US2268769A
Cited
US2382084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-01 | 1953-10-31 | 1954-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-01 | 1957-10-31 | 1958-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-01 | 1961-10-31 | 1962-05-02 | $7700.00 | Window Closed / Lapsed |