US3477558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air lift and vacuum conveyors and foraminous belt means therefor
Assignee: Individual
•
Filing: 1967-05-29
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Granted: 1969-11-11
•
Expires: 1987-05-29
Abstract
No abstract record available.
Inventors
- 👤 Fred J Fleischauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:42
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/063; B65G49/064; B65G49/065; B65G21/00; B65G21/20; B65G21/2027; B65G21/2036; B65G49/068; B65G51/00; B65G51/02; B65G51/03; B65H; B65H29/00; B65H29/26; B65H29/32; B65G2249/00; B65G2249/04; B65G2249/045; B65H2701/00; B65H2701/10; B65H2701/17; B65H2701/176
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |