Patent US2598920A successfully refreshed from Google Patents.
US2598920A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1949-04-12
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Granted: 1952-06-03
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Expires: 1969-04-12
Abstract
No abstract record available.
Inventors
- 👤 Margaret W Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:12
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/0003; B65D71/0077; B65D2571/00; B65D2571/00123; B65D2571/00129; B65D2571/00135; B65D2571/00141; B65D2571/00333; B65D2571/0037; B65D2571/00376; B65D2571/00388; B65D2571/00432; B65D2571/00493; B65D2571/00512; B65D2571/00648; B65D2571/00654; B65D2571/0066; B65D2571/00709; B65D2571/0079
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1949986A
Cited
US2087309A
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US2273266A
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US2365333A
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US2322396A
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US2390020A
Cited
US2458281A
Cited
US2535741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |