US2963327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silo unloaders
Assignee: Rockwood and Co
•
Filing: 1958-02-17
•
Granted: 1960-12-06
•
Expires: 1978-02-17
Abstract
No abstract record available.
Inventors
- 👤 Lynn L Seymour
- 👤 Harlow R Poutsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
B; B65; B65G; B65G65/00; B65G2814/00; B65G2814/02; B65G2814/0217; B65G2814/0223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1479990A
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US2580306A
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US2595333A
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US2719058A
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US2678241A
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US2677474A
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US2663594A
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US2794560A
Cited
US2801137A
Cited
US2877907A
Cited
US2801885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |