Rockin’ Patent – John M A Stroh’s “Violin Or Other Stringed Instrument”

July 5, 2024

Rockin’ Patent®: US Patent No. 644,695
Filed: 21 August 1899
In the name of: John M A Stroh
Title: Violin Or Other Stringed Instrument
What’s claimed: “A stringed musical instrument, comprising in its construction a bridge supporting the strings, a rocking lever connected with the said bridge and supporting the same, a diaphragm held and supported at the edges and adapted to oscillate in the center, a transmitting device situated between the extremity of the rocking lever and the diaphragm and adapted to transmit oscillations from the said lever to the diaphragm, a resonator situated in proximity to the diaphragm and adapted to receive and distribute the waves of air caused by the vibrations of the diaphragm, and a body portion adapted to support the rocking lever diaphragm and resonator and to connect these parts with the parts holding the ends of the strings, substantially as described.”
Why this patent rocks: This patent appears to be the Stroh Violin, invented by electrical engineer John M A Stroh in 1899. The Stroh Violin is a type of stringed musical instrument that is mechanically amplified by a metal resonator and horn attached to its body. For more information, see here.

If you’re a patent-savvy music tech business looking for patent help, get in touch with Russell IP here!

The information above is for general interest and information only and does not constitute legal advice.

Share the Post:

UK Patent Box Tax Relief Explained

By Iain Russell, Patent Attorney and Director at Russell IP – a UK and European Patent Attorney with over 20 years’ experience in patents for technology innovations. Russell IP is regulated by IPReg. What Is The UK Patent Box, And How Can It Save Your Company Tax? Published: July 2026 | Last updated: July 2026 The UK Patent Box is a tax scheme that can reduce the Corporation Tax a company pays on profits from its patented inventions, in some cases to an effective rate of 10%. For a profitable, innovative business, that can be a significant saving – and

IP STARS 2026: Russell IP Attorneys Recognised

By Iain Russell, Patent Attorney & Director at Russell IP (BSc, CPA, EPA, FRSA – 20 years’ experience in computer-implemented inventions and music technology). Russell IP Recognised in the IP STARS 2026 Rankings for a Second Year Running Published: July 2026 | Last updated: July 2026 We are delighted to share that two of our patent attorneys, Iain Russell and Emily Teesdale, have been recognised in the IP STARS 2026 rankings as Notable Practitioners. This is the second consecutive year that Russell IP attorneys have featured. IP STARS is an independent guide to leading intellectual property firms and practitioners, published

Gain the Competitive Edge

Let's see how we can help protect your IP

Get in touch using the contact form or the phone number below to see how we can protect your IP.

There’s no obligation to sign up for anything.

Rockin’ Patent – John M A Stroh’s “Violin Or Other Stringed Instrument”

Related Posts

UK Patent Box Tax Relief Explained

IP STARS 2026: Russell IP Attorneys Recognised

Let's see how we can help protect your IP