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US2648427A
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Assignee: Waldorf Paper Products Co
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Filing: 1949-11-04
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Granted: 1953-08-11
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Expires: 1969-11-04
Abstract
No abstract record available.
Inventors
- 👤 Cary J Langford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:41
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/20; B65D5/30; B65D5/301; B65D5/302; B65D5/42; B65D5/54; B65D5/545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2033550A
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US1996356A
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US2125833A
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US2080729A
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US2113288A
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US2226089A
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US2281165A
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US2366419A
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US2429191A
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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) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |