US2579562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material handling apparatus
Assignee: C O Bartlett & Snow Co
•
Filing: 1949-01-22
•
Granted: 1951-12-25
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Expires: 1969-01-22
Abstract
No abstract record available.
Inventors
- 👤 Wilbert J Fruechtel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:51
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/76; B65G47/763; B22; B22C; B22C5/00; B22C5/14; B22C5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US474592A
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US1093815A
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US1083397A
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US1462660A
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US1596840A
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US2134948A
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US2412137A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |