US2663459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for discharge valves
Assignee: Chiksan Co
•
Filing: 1949-07-18
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Granted: 1953-12-22
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Expires: 1969-07-18
Abstract
No abstract record available.
Inventors
- 👤 Victor E Lagrange
- 👤 Daniel J Parmesan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/36; B60; B60P; B60P3/00; B60P3/22; B60P3/224; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2182969A
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US1825775A
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US1696738A
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US2037021A
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US2037020A
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US2002757A
Cited
US2366925A
Cited
US2361305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |