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US2765950A
Expired / Lapsed
US
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Container devices
Assignee: Airkem Inc
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Filing: 1953-08-11
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Granted: 1956-10-09
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Expires: 1973-08-11
Abstract
No abstract record available.
Inventors
- 👤 William H Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:40
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US450140A
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US741391A
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US739406A
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US1775228A
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FR729447A
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FR822903A
Cited
US2203963A
Cited
US2271156A
Cited
US2486247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |