US3523373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulated housing for a sieve drum apparatus
Assignee: Vepa AG
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Filing: 1967-12-18
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Granted: 1970-08-11
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Heinz Fleissner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:58
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/06; F26B25/08; F26B25/12; D; D06; D06B; D06B19/00; D06B19/0005; D06B19/0047; D06B19/0058; D21; D21F; D21F5/00; F26B13/00; F26B13/10; F26B13/14; F26B13/16
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) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |