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US2224426A
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Assignee: Waldorf Paper Products Co
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Filing: 1940-02-12
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Granted: 1940-12-10
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Expires: 1960-02-12
Abstract
No abstract record available.
Inventors
- 👤 Harry E Cullen
- 👤 Henry O Ronning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:49
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/50; B65H3/24; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/423; B65H2301/4232; B65H2301/42322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-10 | 1944-06-10 | 1944-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-10 | 1948-06-10 | 1948-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-10 | 1952-06-10 | 1952-12-10 | $7700.00 | Window Closed / Lapsed |