Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12218384 | Extended life battery cell | Jiang Fan, Gerardo Jimenez | 2025-02-04 |
| 12211471 | DC power control devices with electrically isolated outputs | Paul E. Christian | 2025-01-28 |
| 11705097 | Battery powered devices with electrically isolated outputs | Paul E. Christian | 2023-07-18 |
| 11423761 | Connected monitoring system | Thomas S. Wright, Brian G. Brackenbury, Steven L. Geerlings, Darin D. Tuttle, Shane M. Courbier | 2022-08-23 |
| 10962493 | Nanofiber smoke detection calibration | David J. Cammenga, Kurtis L. Geerlings, Joel C. Nemes, William L. Tonar, Darin D. Tuttle +1 more | 2021-03-30 |
| 10706828 | Power plate pedal board for musical instrument electronics | Paul E. Christian | 2020-07-07 |
| 9607494 | Supervised interconnect smoke alarm system and method of using same | Greg R. Pattok, Darin D. Tuttle, Scott R. Edwards, David L. Newhouse | 2017-03-28 |
| 6938533 | Blast attenuation container | Steven W. Holland | 2005-09-06 |
| D340455 | Portable musical instrument amplifier with a movable plug | — | 1993-10-19 |
| 5124668 | System for creating distortion in electric musical instruments | — | 1992-06-23 |
| 5018204 | Portable musical instrument amplifier | — | 1991-05-21 |
| 5008634 | System for controlling the dynamic range of electric musical instruments | — | 1991-04-16 |
| 4944016 | Portable musical instrument amplifier | — | 1990-07-24 |
| 4899115 | System for controlling the dynamic range of electric musical instruments | — | 1990-02-06 |
| 4575201 | Method and apparatus for producing folded optical path devices | C. Eugene McGraw, Robert Gazzero | 1986-03-11 |
| 4547813 | Apparatus for controlling light distribution in line scan optical imaging systems | Cobern E. McGraw, Robert Gazzero | 1985-10-15 |