US3518688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave strip transmission line adapted for integral slot antenna
Assignee: TDK Micronas GmbH
•
Filing: 1969-09-15
•
Granted: 1970-06-30
•
Expires: 1989-09-15
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Stayboldt
- 👤 Delmer L Thomas
- 👤 Beverly J Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:59
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/085; H01P3/087; H01Q; H01Q13/00; H01Q13/10; H01Q13/106; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/064; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2381367A
Cited
US2654842A
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GB751385A
Cited
US2913686A
Cited
US2919441A
Cited
US3044921A
Cited
US3218644A
Cited
US3335419A
Cited
US3299430A
Cited
US3262119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |