US2113680A
Expired / Lapsed
US
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Method anx apparatus fob defrost-
Assignee: —
•
Filing: —
•
Granted: 1938-04-12
•
Expires: 1955-04-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:25
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04763; F25J3/04769; F25J3/04812; F25J3/04824; F25J3/04248; F25J3/04284; F25J3/0429; F25J3/04296; F25J3/04406; F25J3/04412; F25J3/04866; F25J3/04951; F25J2250/00; F25J2250/20; F25J2290/00; F25J2290/60; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-04-11 | 1941-10-11 | 1942-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-04-11 | 1945-10-11 | 1946-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-04-11 | 1949-10-11 | 1950-04-12 | $7700.00 | Window Closed / Lapsed |