- ZA HPRA A3299-C-C3-C3.1
- Bestanddeel
Part of Hilda and Rusty Bernstein Papers
Copy of a Report on Novelty Search Relating to Slide Rules, which makes mention of L.Bernstein having developed the longslide rule, which forms the basis of South African Patent Application no. 63/2268; advertising pamphlet for the longslide rule, technical drawing, 1963.