US3477240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating method and system for maintaining substantially constant temperature
Assignee: REFRIGERATION SYSTEM AB
•
Filing: 1968-03-25
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Granted: 1969-11-11
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Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Olle G Thoren
- 👤 Hans A Axelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:31
CPC Classifications
F; F25; F25B; F25B1/00; F25B49/00; F25B49/02; F25B49/027; F25B2400/00; F25B2400/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2280358A
Cited
US2363273A
Cited
US2388556A
Cited
US2963878A
Cited
US3214929A
Cited
US3365902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |