US2417994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: ST PAUL FOUNDRY Co
•
Filing: 1942-09-14
•
Granted: 1947-03-25
•
Expires: 1962-09-14
Abstract
No abstract record available.
Inventors
- 👤 Herman E Sheets
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:45
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/38; F16K31/385
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB189408319A
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GB189421543A
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FR339086A
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FR336124A
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US971934A
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US1302538A
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US1489811A
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FR590737A
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US1814206A
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US1885367A
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DE626583C
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US2000297A
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US2137874A
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US2235304A
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GB524896A
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US2291731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |