Patent US2492006A successfully refreshed from Google Patents.
US2492006A
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Pressure cylinder
Assignee: Weatherhead Co
•
Filing: 1945-05-17
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Granted: 1949-12-20
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Expires: 1965-05-17
Abstract
No abstract record available.
Inventors
- 👤 Frank J Raybould
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; F16J15/48; Y; Y10; Y10S; Y10S285/00; Y10S285/918; Y10T; Y10T292/00; Y10T292/20; Y10T292/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1678946A
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US1780764A
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US1953184A
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US1872516A
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US2230286A
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US2349170A
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US2360535A
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US2390445A
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US2410808A
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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) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |