Patent US2434393A successfully refreshed from Google Patents.
US2434393A
Expired / Lapsed
US
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Radiator vent valve
Assignee: Metals and Controls Corp
•
Filing: 1943-10-14
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Granted: 1948-01-13
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Expires: 1963-10-14
Abstract
No abstract record available.
Inventors
- 👤 Paul G Chace
- 👤 Unto U Savolainen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:22
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; F24; F24D; F24D19/00; F24D19/08; F24D19/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1340439A
Cited
US1464756A
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US1598241A
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US1761685A
Cited
US1881246A
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US2121259A
Cited
US2057041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |