US3390356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tem mode coupler having an exponentially varying coefficient of coupling
Assignee: HP Inc
•
Filing: 1965-07-30
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Granted: 1968-06-25
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Expires: 1985-07-30
Abstract
No abstract record available.
Inventors
- 👤 Auber G Ryals
- 👤 Richard W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:03
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/02; H01P5/022; H01P5/026; H01P1/00; H01P1/16; H01P1/162; H01P5/12; H01P5/16; H01P5/18; H01P5/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |