Willard E. Trefren

City:

Carlisle, Pennsylvania

Country:

United States

Published Applications:

Last publication date:

2022-02-10

Recent patent applications by Trefren Willard E.

Willard E. Trefren from Carlisle, US has applied for patents for these inventions. The list has both pending applications and granted patents:

#1 | 2022-02-10

US20220044529A1

Physics

DOORBELL IMPROVEMENTS

InventorID:

5322898 ⎘