US3138296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silo compartment for materials in powdery form
Assignee: Buehler AG
•
Filing: 1961-01-31
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Granted: 1964-06-23
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Expires: 1981-01-31
Abstract
No abstract record available.
Inventors
- 👤 Neidhardt Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:16
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US611960A
Cited
US1300441A
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US1539333A
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US2120269A
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US2346131A
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US2363155A
Cited
US2547919A
Cited
US2598388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |