Patent US2917768A successfully refreshed from Google Patents.
US2917768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaning machine for containers
Assignee: FEARN FOODS Inc
•
Filing: 1957-05-08
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Granted: 1959-12-22
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Expires: 1977-05-08
Abstract
No abstract record available.
Inventors
- 👤 William A Walberer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:45
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/20; B08B9/28; B08B9/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1551305A
Cited
US1149844A
Cited
US1361039A
Cited
US2324783A
Cited
US2644188A
Cited
US2818873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |