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US2910092A
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Pressure differential device embodying pressure deflectable bellows and means for adjusting the line of action of the bellows
Assignee: Hagan Chemicals and Controls Inc
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Filing: 1955-08-18
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Granted: 1959-10-27
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Expires: 1975-08-18
Abstract
No abstract record available.
Inventors
- 👤 Ray S Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:24
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1912937A
Cited
US2111230A
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US2230056A
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US2455184A
Cited
US2642747A
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US2631599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |