Patent US3755848A successfully refreshed from Google Patents.
Patent US3547359A successfully refreshed from Google Patents.
US3547359A
Expired / Lapsed
US
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Drying and pulverizing apparatus with recirculation of material
Assignee: Individual
•
Filing: 1968-05-31
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Granted: 1970-12-15
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Expires: 1988-05-31
Abstract
No abstract record available.
Inventors
- 👤 Harvey M Wenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:52
CPC Classifications
C; C05; C05F; C05F9/00; C05F9/02; C05F1/00; C05F1/02; C05F3/00; C05F3/06; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02P; Y02P20/00; Y02P20/141; Y02P20/145
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |