Patent US2639876A successfully refreshed from Google Patents.
US2639876A
Expired / Lapsed
US
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Molded structure
Assignee: Individual
•
Filing: 1947-09-03
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Granted: 1953-05-26
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Expires: 1967-09-03
Abstract
No abstract record available.
Inventors
- 👤 Misfeldt Charles Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:54
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/001; B29D99/0014; B64; B64F; B64F5/00; B64F5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1097848A
Cited
US1272062A
Cited
US1531445A
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US1576317A
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US1671253A
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US1854330A
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US2230393A
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US2225779A
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US2256234A
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US2458686A
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US2371754A
Cited
GB559954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |