US2458894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-temperature refrigeration system
Assignee: Arthur D Little Inc
•
Filing: 1940-10-14
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Granted: 1949-01-11
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Expires: 1960-10-14
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:35
CPC Classifications
F; F25; F25J; F25J1/00; F25J1/02; F25J1/0228; F25J1/0235; F25J1/0236; F25B; F25B9/00; F25B9/10; F25J1/0002; F25J1/0005; F25J1/0007; F25J1/003; F25J1/0047; F25J1/005; F25J1/0052; F25J1/006; F25J1/0062; F25J1/0065; F25J1/0203; F25J1/0204; F25J1/0243; F25J1/0244; F25J1/0245; F25J1/0249; F25J1/025; F25J1/0257; F25J1/0261; F25J1/0262; F25J1/0264; F25J1/0265; F25J3/00; F25J3/02; F25J3/04; F25J3/04248; F25J3/04278; F25J3/044; F25J2200/00; F25J2200/50; F25J2200/74; F25J2270/00; F25J2270/14; F25J2270/16; F25J2270/30
Claims Analysis
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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) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |