US2674859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry ice refrigerator
Assignee: Individual
•
Filing: 1952-03-03
•
Granted: 1954-04-13
•
Expires: 1972-03-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:19
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE19055E
Cited
US2078129A
Cited
US1893228A
Cited
US1989247A
Cited
US2097685A
Cited
US2122381A
Cited
US2244904A
Cited
US2255356A
Cited
US2437332A
Cited
US2507866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |