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US3380643A
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Assignee: NORTHWESTERN CORRUGATED BOX CO
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Filing: 1966-02-25
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Granted: 1968-04-30
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Expires: 1986-02-25
Abstract
No abstract record available.
Inventors
- 👤 Roger A Sorensen
- 👤 Paul F Boeye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:57
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/50; B65D5/5002; B65D5/5016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1931293A
Cited
US2444987A
Cited
US2609920A
Cited
US3101843A
Cited
US3116005A
Cited
US3227356A
Cited
US3219256A
Cited
US3294226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |