Patent US2579977A successfully refreshed from Google Patents.
US2579977A
Expired / Lapsed
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Dispensing valve unit for volatile products
Assignee: Continental Can Co Inc
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Filing: 1947-09-11
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Granted: 1951-12-25
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Expires: 1967-09-11
Abstract
No abstract record available.
Inventors
- 👤 Harry H Sjolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:52
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/44; B65D83/48; B65D83/16; B65D83/20; B65D83/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT79738B
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US1431526A
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FR609670A
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FR621978A
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US1892750A
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GB290873A
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US1966911A
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US1985455A
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US2171373A
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US2237489A
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US2351965A
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US2372392A
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US2351697A
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US2420223A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |