US2558794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of fuelless refrigeration and heating for containers
Assignee: Individual
•
Filing: 1949-06-17
•
Granted: 1951-07-03
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Stark Virgil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:01
CPC Classifications
F; F25; F25D; F25D29/00; F25D29/003; F25B; F25B17/00; F25B17/02; F25D11/00; F25D11/003; F25D31/00; F25D31/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064040A
Cited
US2195387A
Cited
US2206705A
Cited
US2224819A
Cited
US2374972A
Cited
US2498369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |