Patent US3366368A successfully refreshed from Google Patents.
US3366368A
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US
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Method for feeding particulate material
Assignee: Johns Manville Corp
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Filing: 1965-10-19
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Granted: 1968-01-30
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Expires: 1985-10-19
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Hibbing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:59
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/30; B30B15/302; B01; B01F; B01F33/00; B01F33/80; B01F33/82; B01F33/821; B30B11/00; B30B11/02; B30B11/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US843565A
Cited
US1457325A
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US1837565A
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US2411138A
Cited
US2390186A
Cited
US2738550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |