US2928059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide coupling
Assignee: TDK Micronas GmbH
•
Filing: 1958-01-06
•
Granted: 1960-03-08
•
Expires: 1978-01-06
Abstract
No abstract record available.
Inventors
- 👤 Chamberlain George
- 👤 Morton P Nashman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:09
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/04; H01P1/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2069375A
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US2505163A
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US2514246A
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US2609268A
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US2643139A
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US2688500A
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US2810114A
Cited
US2848697A
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US2883632A
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US2862728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |