NAT RES DEV
NAT RES DEActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1235321A | Improvements in or relating to drills for clearing obstruct… | Expired / Lapsed | 1968-01-30 | — | 0 | Details |
| GB1205743A | Surgical dilator | Expired / Lapsed | 1966-07-15 | — | 0 | Details |
| GB1143403A | Apparatus for supplying carbon dioxide to growing plants | Expired / Lapsed | 1965-02-04 | — | 0 | Details |
| US3614953A | Drills for clearing obstructions in arteries | Expired / Lapsed | 1969-01-21 | 1971-10-26 | 0 | Details |
| FR1232113A | Flowmeters | Expired / Lapsed | 1959-08-06 | 1960-10-05 | 0 | Details |
| US2664555A | Multielectrode gaseous-discharge tube circuits | Expired / Lapsed | 1952-02-21 | 1953-12-29 | 0 | Details |