listed From oldest to newest:

4,073,371

Apparatus and circuits for two-color printing in electronic impact printers

4,079,298

Open-loop D.C. motor (CONTROL) of printer carriage speed

4,215,386

Modular panel construction for programmable controller

4,247,882

Universal input/output system construction for programmable controllers

4,288,839

Solid state device mounting and heat dissipating assembly

D272,348

Case for a keyboard and display unit

D278,897

Housing for a central processing unit

D281,493

Input/output module for programmable controller

4,558,914

Readily expandable input/output construction for programmable controller

5,088,016

Voltage-compliant DC-DC converter module

D328,057

Power supply

5,235,502

Zero current switching forward power conversion apparatus and method with controllable energy transfer

5,321,348

Boost switching power conversion

5,428,337

Conductive winding

5,546,065

High frequency circuit having a transformer with controlled interwinding coupling and controlled leakage inductances

5,572,417

AC to DC boost power converters

5,621,631

AC to DC boost switching power converters

5,663,635

Reverse energy transfer in zero-current switching power conversion

5,668,466

Reverse energy transfer in zero-current switching power conversion

5,694,309

Synchronization of power converter arrays

5,719,544

Transformer with controlled interwinding coupling and controlled leakage inducTances and circuit using such transformer

5,726,872

AC to DC boost power converters

5,805,434

Control of stored magnetic energy in power converter transformers

5,875,104

Operating switching power converters in a phased power sharing array

6,031,726

Low profile mounting of power converters with the converter body in an aperture

6,421,262

Active rectifier

6,522,108

Loss and noise reduction in power converters

RE38,196

Control of stored magnetic energy in power converter transformers

6,653,924

Transformer with controlled interwinding coupling and controlled leakage inductances and circuit using such transformer

6,940,013

Surface mounting a power converter

6,985,341

Components having actively controlled circuit elements

7,015,561

Active rectifier

7,233,469

components having actively controlled circuit elements

RE40,072

Loss and noise reduction in power converters

8,931,755

manual to automatic valve conversion device

9,016,662

Efficient manual to automatic valve conversion device