US2229437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for preservation of low temperature refrigerants
Assignee: Mergenthaler Linotype GmbH
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Filing: 1937-11-04
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Granted: 1941-01-21
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Expires: 1957-11-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:30
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; C; C01; C01B; C01B32/00; C01B32/50; C01B32/55; F17C2201/00; F17C2201/01; F17C2201/0147; F17C2201/0166; F17C2201/03; F17C2201/032; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0354; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0612; F17C2203/0626; F17C2203/0631; F17C2203/0634; F17C2203/0636; F17C2203/0646; F17C2203/0678; F17C2203/068; F17C2203/0682; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/018; F17C2221/00; F17C2221/01; F17C2221/013; F17C2221/03; F17C2221/031; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/0176; F17C2227/00; F17C2227/03; F17C2227/0337; F17C2227/0341; F17C2227/0355; F17C2227/0367; F17C2227/0369; F17C2227/0374; F17C2260/00; F17C2260/03; F17C2260/031; F17C2270/00; F17C2270/01; F17C2270/0142; F17C2270/0144; F17C2270/0147; F17C2270/0157; F17C2270/016
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) | 1944-01-21 | 1944-07-22 | 1945-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-21 | 1948-07-22 | 1949-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-21 | 1952-07-22 | 1953-01-21 | $7700.00 | Window Closed / Lapsed |