US3384467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for converting coal
Assignee: Avco Corp
•
Filing: 1964-02-03
•
Granted: 1968-05-21
•
Expires: 1984-02-03
Abstract
No abstract record available.
Inventors
- 👤 Paul R Ammann
- 👤 Raymond F Baddour
- 👤 Thomas W Mix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:20
CPC Classifications
C; C10; C10B; C10B19/00; C10B7/00; C10B7/10; C10G; C10G1/00; C10G1/02; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US961912A
Cited
US1282445A
Cited
US1757454A
Cited
US2068448A
Cited
US2447426A
Cited
US2968683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |