Patent US2841674A successfully refreshed from Google Patents.
US2841674A
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US
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Pressure responsive instrument
Assignee: Bourns Inc
•
Filing: 1954-01-05
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Granted: 1958-07-01
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Expires: 1974-01-05
Abstract
No abstract record available.
Inventors
- 👤 Marlan E Bourns
- 👤 Marvin E Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:50
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; G; G01; G01L; G01L9/00; G01L9/0033; G01L9/0035; G01L9/0082; G01L9/0083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1064555A
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GB201411A
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US2159513A
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US2302713A
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US2332565A
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US2443252A
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US2523213A
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US2506503A
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US2622177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |