Patent US2641881A successfully refreshed from Google Patents.
US2641881A
Expired / Lapsed
US
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Packaging equipment
Assignee: MCKAY DAVIS CHEMICAL CORP
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Filing: 1946-12-04
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Granted: 1953-06-16
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Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Alfonso M Donofrio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:03
CPC Classifications
B; B65; B65B; B65B35/00; B65B35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US219420A
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US1135767A
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US1986422A
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US2083617A
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US2111529A
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US2198137A
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US2361052A
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US2336962A
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US2541387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |