Patent US2466809A successfully refreshed from Google Patents.
US2466809A
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US
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Pressure measuring apparatus
Assignee: Robertshaw US Holding Corp
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Filing: 1944-05-15
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Granted: 1949-04-12
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Expires: 1964-05-15
Abstract
No abstract record available.
Inventors
- 👤 Walter V Hobbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
G; G01; G01L; G01L27/00; G01L27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408655A
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US674604A
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US864461A
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US1100672A
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US1468383A
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US1524868A
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GB348940A
Cited
US2206837A
Cited
US2219036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |