DL

David T. Llewellyn

RC Robertshaw Controls: 8 patents #24 of 302Top 8%
MI Mizuno: 3 patents #77 of 221Top 35%
📍 Norcross, GA: #66 of 638 inventorsTop 15%
🗺 Georgia: #3,023 of 35,610 inventorsTop 9%
Overall (All Time): #438,954 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
12390706 Bat system with performance limiting structure and methods of making same Kohei Kikuchi, Yohei Yamashita, Thu Nguyen, Chi-Hung Lee, Renqin Zhang +1 more 2025-08-19
11524215 Bat system with performance limiting structure and methods of making same Kohei Kikuchi, Yohei Yamashita, Thu Nguyen, Chi-Hung Lee, Renqin Zhang 2022-12-13
10967235 Bat system with performance limiting structure and methods of making same Kohei Kikuchi, Yohei Yamashita, Thu Nguyen, Chi-Hung Lee, Renqin Zhang 2021-04-06
5310970 Pressure operated switch construction and method of making the same William J. Kaigler, Thomas M. Buckshaw 1994-05-10
5198632 Pressure operated switch construction and method of making the same William J. Kaigler, Thomas M. Buckshaw 1993-03-30
5140742 Method of making a pressure operated switch William J. Kaigler, Thomas M. Buckshaw 1992-08-25
5136129 Pressure operated switch construction and method of making William J. Kaigler, Thomas M. Buckshaw 1992-08-04
4993144 Method of making a cyclable electrical switch construction William J. Lichtenberger 1991-02-19
4883983 Switching system for plural load circuit William J. Lichtenberger 1989-11-28
4800633 Method of making a water level control device Thomas M. Buckshaw 1989-01-31
4696204 Water level control device and method of making the same Thomas M. Buckshaw 1987-09-29