Patent US3482534A successfully refreshed from Google Patents.
US3482534A
Expired / Lapsed
US
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Apparatus and method for handling and burning a finely comminuted solid
Assignee: JOHN E WHITMAN
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Filing: 1969-02-13
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Granted: 1969-12-09
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Expires: 1989-02-13
Abstract
No abstract record available.
Inventors
- 👤 John E Whitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
F; F23; F23D; F23D1/00; F23C; F23C1/00; F23K; F23K1/00; F23G; F23G2209/00; F23G2209/22; F23G2209/26; F23G2209/261; F23K2201/00; F23K2201/10; F23K2201/1003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1562411A
Cited
US2226923A
Cited
US2267025A
Cited
US2514768A
Cited
GB737151A
Cited
GB756803A
Cited
US2903980A
Cited
US3286666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |