US2441592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure controlling apparatus
Assignee: Joy Manufacturing Co
•
Filing: 1942-08-06
•
Granted: 1948-05-18
•
Expires: 1962-08-06
Abstract
No abstract record available.
Inventors
- 👤 Win W Paget
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:57
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02; B64D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319370A
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FR514055A
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FR679386A
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US2117800A
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US2194749A
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US2208554A
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US2258054A
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GB521823A
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US2342220A
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US2307199A
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US2289639A
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US2391197A
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US2396116A
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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) | 1951-05-18 | 1951-11-17 | 1952-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-18 | 1955-11-17 | 1956-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-18 | 1959-11-17 | 1960-05-18 | $7700.00 | Window Closed / Lapsed |