Patent US2609954A successfully refreshed from Google Patents.
US2609954A
Expired / Lapsed
US
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Transport lift
Assignee: Celanese Corp
•
Filing: 1949-02-02
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Granted: 1952-09-09
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Expires: 1969-02-02
Abstract
No abstract record available.
Inventors
- 👤 Frederick F Sutherland
- 👤 Alvin B Storey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:34
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US682175A
Cited
US992307A
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US1446331A
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US1767525A
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US1682078A
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US1834499A
Cited
US2014807A
Cited
US2247144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |