Patent US4614490A successfully refreshed from Google Patents.
Patent US2493150A successfully refreshed from Google Patents.
US2493150A
Expired / Lapsed
US
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Hoist
Assignee: Individual
•
Filing: 1948-08-12
•
Granted: 1950-01-03
•
Expires: 1968-08-12
Abstract
No abstract record available.
Inventors
- 👤 Fredrick W Kroger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:48
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/04; B60P1/06; B60P1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1424425A
Cited
GB273099A
Cited
US1987052A
Cited
US2027098A
Cited
US2220450A
Cited
US2258383A
Cited
US2421472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |