US3472431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic method and apparatus for facilitating gravity flow of granular material
Assignee: Individual
•
Filing: 1967-07-24
•
Granted: 1969-10-14
•
Expires: 1987-07-24
Abstract
No abstract record available.
Inventors
- 👤 Albert G Bodine Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:32
CPC Classifications
B; B65; B65G; B65G27/00; B65G27/10; B65G27/28; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544; Y10T74/18552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3130552A
Cited
US2800252A
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US2914313A
Cited
US3166772A
Cited
US3239108A
Cited
US3248018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |