US2168506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating food products
Assignee: CROWN CAN Co
•
Filing: 1938-01-19
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Granted: 1939-08-08
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Expires: 1958-01-19
Abstract
No abstract record available.
Inventors
- 👤 Ayers Samuel Henry
- 👤 Charles W Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:01
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/20; A23B2/22; A23B2/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-08-07 | 1943-02-06 | 1943-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-07 | 1947-02-06 | 1947-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-07 | 1951-02-06 | 1951-08-08 | $7700.00 | Window Closed / Lapsed |