US2839236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton closure
Assignee: Waldorf Paper Products Co
•
Filing: 1953-10-14
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Granted: 1958-06-17
•
Expires: 1973-10-14
Abstract
No abstract record available.
Inventors
- 👤 Robert M Dunning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:12
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/64; B65D5/66; B65D5/6626; B65D5/665; B65D5/6661; B65D5/6664; B65D5/6667
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US719553A
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US1153136A
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US1277459A
Cited
US2116652A
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US2217503A
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US2544565A
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US2628012A
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US2731191A
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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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |