KLS Martin (founded in 1923) is a renowned German manufacturer of high-precision surgical instruments and implants, surgical lights, high-frequency coagulators, and lasers.

The Partnership of P.I. Makhin and Co. In Moscow (Товарищество П. И. Махин и Ко. В Москве) was engaged in the sale and repair of medical equipment. Founded: 1868. Dissolved: 1918 (?). Address: Rozhdestvenska Street, near Kuznetsky Most, House of Suzdal Podvor'e No. 7. Awardswith medal depicted in the 1914 catalog: Silver Medal of the Nizhny Novgorod Fair in 1895; Gold Medal of the Exhibition in Paris 1900; Diploma of Honor Paris 1904. Supplier of the instruments of Collin and Mathieu in Russia

German company Karl Storz, "King of Endoscopy", is nowadays a world-leading manufacturer of minimally invasive surgical instruments and integrated operation room solutions

F. C. Rein & Son was London's foremost maker of mechanical acoustic hearing instruments, operating from the Strand for over a century. Founded ca. 1834–1835 by Frederick Charles Rein (1813–1896), a Saxon-born craftsman, the firm produced ear trumpets, concealed acoustic headbands and vases, speaking tubes for churches and audiences, and purpose-built acoustic furniture of exceptional quality. A medallist at the Great Exhibition of 1851, Rein was praised by the leading ear specialists of his day. After his death in 1896 the business passed to the Kahn family, who modernised it into the electronic age before finally closing in 1963 — making F. C. Rein & Son both the first and longest commercial hearing aid maker of its kind.