- 1Reference: SP7/6/39
Title: Gelpke and Kugel and Escher Wyss and Company reference centrifugal high pressure pumps
Level of description: item
Date Free Text: 1906
Production date: From: 1906 To: 1906 - 2Reference: SP7/6/43
Title: Gelpke and Kugel reference centrifugal high pressure pumps
Level of description: item
Date Free Text: 1910
Production date: From: 1910 To: 1910 - 3Reference: SP11/7/6
Title: Copy of letter and translation from Paul Kugel concerning the construction of centrifugal pumps desi...
Level of description: item
Date Free Text: 1907 – 1908
Production date: From: 1907 To: 1908