US2785535A
Expired / Lapsed
US
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Fluid pressure-actuated apparatus
Assignee: Chambersburg Engineering Co
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Filing: 1953-07-27
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Granted: 1957-03-19
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert L Alcorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:09
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/16; B30B15/18; B30B15/20; B21; B21J; B21J7/00; B21J7/20; B21J7/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US254741A
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US1231628A
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US1832694A
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US1905065A
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GB430825A
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US2160920A
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US2262126A
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US2375946A
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US2615306A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |