Patent US2704493A successfully refreshed from Google Patents.
US2704493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded pulp articles and process of
Assignee: —
•
Filing: —
•
Granted: 1955-03-22
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Expires: 1972-03-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:37
CPC Classifications
D; D21; D21J; D21J5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1266449A
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US1598260A
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US1599384A
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US1694627A
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US1884366A
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US2023200A
Cited
GB419807A
Cited
US2237048A
Cited
US2274095A
Cited
US2337581A
Cited
US2317394A
Cited
US2369488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |