Patent US3749621A successfully refreshed from Google Patents.
US3549389A
Expired / Lapsed
US
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Food package
Assignee: Dow Chemical Co
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Filing: 1969-09-17
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Granted: 1970-12-22
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Expires: 1989-09-17
Abstract
No abstract record available.
Inventors
- 👤 Norman R Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:20
CPC Classifications
B; B32; B32B; B32B27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3152950A
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US2893908A
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US3086216A
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US3170013A
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US3219734A
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US3223761A
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US3274004A
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US3321804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |