US3475832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous fluid bed dryer
Assignee: PROCESS EQUIPMENT ENG CO
•
Filing: 1967-08-04
•
Granted: 1969-11-04
•
Expires: 1987-08-04
Abstract
No abstract record available.
Inventors
- 👤 Walter Kuelling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:04
CPC Classifications
F; F26; F26B; F26B3/00; F26B3/02; F26B3/06; F26B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US40130A
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US523237A
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US1989751A
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US2308883A
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US2444383A
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US2501487A
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US2636284A
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US2911730A
Cited
GB843705A
Cited
US3269029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |