Brevet
Brevets Royaume-Uni 1992

- Patent:GB2220770 09.09.1992 John Christopher Hirst : V.M.G. (velocity made good) comparator
- Patent:GB2254953 21.10.1992 Mckenna, Josephine (P) und McKenna, James (P) : Musical Transposition Slide Rule
![]() | RechnerlexikonDie große Enzyklopädie des mechanischen Rechnens |
18.204.42.98 | Identification | Aide
|
DE | EN | FR | IT |
![]() |
![]() | Article
Image Brevet |