Patent US5242404A successfully refreshed from Google Patents.
US2889845A
Expired / Lapsed
US
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Vent valve mechanism
Assignee: Standard Thomson Corp
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Filing: 1955-06-27
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Granted: 1959-06-09
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Ewald J Kimm
- 👤 Paul F Early
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/0011; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963; Y10T137/1987
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324515A
Cited
US827823A
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US1204316A
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US2169321A
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US2506694A
Cited
FR936419A
Cited
US2694358A
Cited
US2720212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |