| Patent No. | Patent Title: |
| 4223285 | Elastic surface wave filter |
| 4216448 | Microwave distributed-constant band-pass filter comprising projec... |
| 4213104 | Vacuum encapsulation for surface acoustic wave (SAW) devices |
| 4213106 | Tuning apparatus and method of producing the same |
| 4213105 | Transversal filter having at least one analog shift register, and... |
| 4213107 | Electro-mechanical filter |
| 4210883 | Technique for widening the temperature range of surface acoustic ... |
| 4210884 | Helical resonator band pass filter with novel coupling means |
| 4210882 | Delay network comprising a chain of all-pass sections |
| 4209757 | Circuit for compensating harmonic currents in an electric consume... |
| 4207546 | Phase and amplitude programmable internal mixing SAW signal proce... |
| 4207545 | Linear SAW signal processor |
| 4206426 | Multiple pole surface wave acoustic filters employing angled groo... |
| 4206427 | Electromechanical filters |
| 4205283 | Signal delay system |
| 4205280 | Surface wave device with suppressed boundary-reflected waves |
| 4205282 | Phase shifting circuit element |
| 4205284 | Electrical frequency filter comprising piezoelectric crystals |
| 4204177 | Non-recursive digital filter with reduced output sampling frequen... |
| 4204178 | Acoustic wave devices |
| 4203082 | Surface acoustic wave filter |
| 4203081 | Passive circuit element for influencing pulses |
| 4201964 | Elastic surface wave device |
| 4200848 | Transversal filter |
| 4200849 | Tuned unidirectional surface wave transducer |
| 4199738 | Multipactor switch |
| 4199737 | Magnetostatic wave device |
| 4198612 | Image analysis nonlinear adaptive filter for improving signal-to-... |
| 4197515 | Synchronous filter |
| 4197516 | Bridged electromechanical filters |
| 4196407 | Piezoelectric ceramic filter |
| 4195271 | Broad-band 180° phase shifter |
| 4195272 | Filter connector having contact strain relief means and an improv... |
| 4195273 | CTD charge subtraction transversal filter |
| 4195201 | Inductive coil module |
| 4194172 | Apparatus for filtering an electrical signal with a charge-couple... |
| 4193050 | Transversal filter |
| 4191934 | High efficiency wide band surface acoustic wave coupler processor... |
| 4191933 | Differential mixing surface acoustic wave signal processor |
| 4188598 | Electrical filter |
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