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US2638386A
Expired / Lapsed
US
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Structural joint
Assignee: Individual
•
Filing: 1947-02-19
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Granted: 1953-05-12
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Expires: 1967-02-19
Abstract
No abstract record available.
Inventors
- 👤 Charles O Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:32
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US390103A
Cited
US436120A
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US438280A
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US1211069A
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US1811094A
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US1942003A
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US2197187A
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US2376787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |