US2911902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for circulating a liquid through a body of solids
Assignee: Automatic Canteen Co
•
Filing: 1957-01-11
•
Granted: 1959-11-10
•
Expires: 1977-01-11
Abstract
No abstract record available.
Inventors
- 👤 Richard J Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:25
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/007; A47J31/18
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |