Patent US2844026A successfully refreshed from Google Patents.
US2844026A
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Combined moisture and liquid indicators
Assignee: Sporlan Valve Co
•
Filing: 1956-06-18
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Granted: 1958-07-22
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Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 William F Wischmeyer
- 👤 John E Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:39
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; G01N31/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2613534A
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US1103985A
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US2325657A
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US2506806A
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US2534279A
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US2594113A
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US2716338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |