J B Development Corporation
4Patents
0Active
4Granted
24Portfolio score
Filing activity: Sep 21, 1978 → Dec 28, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4435976A | Apparatus for measuring the hardness properties of materials | Physics | 14 | Expired |
| US4199976A | Hardness testing apparatus | Physics | 4 | Expired |
| US4435975A | Apparatus and method for cutting a flat surface on a metallic member | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4283939A | Dial gauge mounting apparatus | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.