US2469828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporator unit
Assignee: Houdaille Hershey Corp
•
Filing: 1946-06-15
•
Granted: 1949-05-10
•
Expires: 1966-06-15
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:54
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25B39/022; F25B39/024; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49396
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190602535A
Cited
US2157127A
Cited
US2067208A
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US2136249A
Cited
US2162586A
Cited
US2234713A
Cited
US2244475A
Cited
US2349695A
Cited
US2386613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |