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US2447489A
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Lead-in bushing
Assignee: Raytheon Co
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Filing: 1943-01-09
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Granted: 1948-08-24
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Expires: 1963-01-09
Abstract
No abstract record available.
Inventors
- 👤 Richard U Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:22
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US276415A
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US1309799A
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US716398A
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US768175A
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US887877A
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US965684A
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US1533270A
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US1852366A
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FR813730A
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US2186934A
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US2406852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |