GENEVA, July 10 -- BARRAGAN, Sergio Armando (332 Healy Ave S. Apt 6North Bend, Washington 98045) filed a patent application (PCT/US2024/025063) for "PIANO SCALE MASTER" on Apr 17, 2024. With publication no. WO/2025/144440, the details related to the patent application was published on Jul 03, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
Inventor(s): BARRAGAN, Sergio Armando (332 Healy Ave S. Apt 6North Bend, Washington 98045)
Abstract:
A portable lightweight teaching piano. The piano is equipped with two levels of keys. There is a row of natural keys as well as a row of accidental keys. Each row of...