Patent US2419145A successfully refreshed from Google Patents.
US2419145A
Expired / Lapsed
US
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Hoist
Assignee: Individual
•
Filing: 1944-10-09
•
Granted: 1947-04-15
•
Expires: 1964-10-09
Abstract
No abstract record available.
Inventors
- 👤 William J Kersenbrock
- 👤 Walter W Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:11
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/20; B66C23/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US719625A
Cited
US874553A
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US1078998A
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US1101190A
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US1173036A
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US1616743A
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US1776439A
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US1552333A
Cited
US1605510A
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US1688507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-14 | 1950-10-14 | 1951-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-14 | 1954-10-14 | 1955-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-14 | 1958-10-14 | 1959-04-15 | $7700.00 | Window Closed / Lapsed |