US2447665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerated products and methods and apparatus for producing same
Assignee: TAMPA AVIAT Inc
•
Filing: 1942-04-03
•
Granted: 1948-08-24
•
Expires: 1962-04-03
Abstract
No abstract record available.
Inventors
- 👤 Harry W Protzeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:52
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D13/08; A; A23; A23B; A23B2/00; A23B2/80; A23B2/805; A23B7/00; A23B7/04; A23B7/0425; F; F25; F25D; F25D1/00; Y; Y02; Y02A; Y02A40/00; Y02A40/90; Y02A40/963; Y10; Y10S; Y10S62/00; Y10S62/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |