US2674100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveying of pieces of material through a zone of refrigeration
Assignee: T Wall & Sons Ltd
•
Filing: 1950-03-07
•
Granted: 1954-04-06
•
Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Stonestreet George Alec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:19
CPC Classifications
F; F25; F25D; F25D25/00; F25D25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1817890A
Cited
US2247865A
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US2223972A
Cited
US2267789A
Cited
US2372373A
Cited
US2488344A
Cited
US2487408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |