Patent US3170489A successfully refreshed from Google Patents.
US3170489A
Expired / Lapsed
US
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Method of making plastic impregnated paper tubes and resulting product
Assignee: Sonoco Products Co
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Filing: 1961-01-27
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Granted: 1965-02-23
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Expires: 1981-01-27
Abstract
No abstract record available.
Inventors
- 👤 Mccleery B Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:32
CPC Classifications
B; B31; B31C; B31C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US374133A
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US444233A
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US1271211A
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US2075325A
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US2360109A
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US2552599A
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US2828798A
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US2895511A
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US2937665A
Cited
US3005742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |