US2474137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling system for wave guides
Assignee: Raytheon Co
•
Filing: 1944-02-15
•
Granted: 1949-06-21
•
Expires: 1964-02-15
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:39
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01P5/10; H01P5/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2106769A
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US2232179A
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US2253503A
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US2250096A
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US2317503A
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US2311520A
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US2408032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |