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US2640644A
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Assignee: Waldorf Paper Products Co
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Filing: 1949-07-05
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Granted: 1953-06-02
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Expires: 1969-07-05
Abstract
No abstract record available.
Inventors
- 👤 Russell J Hennessey
- 👤 Morton B Jameson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:30
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/48; B65D5/48024; B65D5/48026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170729A
Cited
US1545786A
Cited
US1630862A
Cited
US1956444A
Cited
US2013240A
Cited
US2597846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |