Compair Construction and Mining Ltd.
6Patents
0Active
6Granted
25Portfolio score
Filing activity: Jul 1, 1976 → Feb 27, 1980
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4303131A | Compressed-gas-operated reciprocating piston devices | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4133393A | Down-the-hole percussion drills | Fixed Constructions | 13 | Expired |
| US4303133A | Compressed-gas-operated reciprocating-piston devices | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4116409A | Hydraulic levelling systems for drilling machines, etc. | Fixed Constructions | 3 | Expired |
| US4211522A | Oil-injected rotary compressors | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4161989A | Reciprocating hydraulic motors | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.