US3012210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional couplers
Assignee: Individual
•
Filing: 1959-06-04
•
Granted: 1961-12-05
•
Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Donald J Nigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:23
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2860308A
Cited
US2934719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |