Patent US2684159A successfully refreshed from Google Patents.
US2684159A
Expired / Lapsed
US
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Telescoping boom actuating mechanism
Assignee: Warner and Swasey Co
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Filing: 1950-07-12
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Granted: 1954-07-20
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Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Henry A Oldenkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:13
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/283; E02F3/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US326336A
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US484664A
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US1345304A
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US1390837A
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US1898369A
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US2196649A
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US2261930A
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US2541045A
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US2382299A
Cited
US2510636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |