US2924952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mix-and-air feeding system and device for freezers
Assignee: Individual
•
Filing: 1957-05-27
•
Granted: 1960-02-16
•
Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Harvey F Swenson
- 👤 Robert C Ridgway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:59
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822854A
Cited
US1422768A
Cited
US1538102A
Cited
FR810207A
Cited
US2522651A
Cited
US2737024A
Cited
US2785836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |