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Patent US2857212A successfully refreshed from Google Patents.
US2857212A
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Platform lift for man and materials
Assignee: Individual
•
Filing: 1954-03-26
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Granted: 1958-10-21
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Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Everitt Ronald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
B; B66; B66F; B66F11/00; B66F11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US104141A
Cited
US507591A
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US1917010A
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US1926697A
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US2309766A
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US2362170A
Cited
US2474296A
Cited
US2545723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |