Patent US2556893A successfully refreshed from Google Patents.
US2556893A
Expired / Lapsed
US
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Self-cooling container
Assignee: Individual
•
Filing: 1947-10-09
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Granted: 1951-06-12
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Expires: 1967-10-09
Abstract
No abstract record available.
Inventors
- 👤 Zwiebach Leo
- 👤 Zwiebach Mendy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:21
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/107; F25D2331/00; F25D2331/80; F25D2331/803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |