Patent Explorer
Browse, filter, and analyze 17 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US5269811A | Primary fluid actuated, secondary fluid propelling system | National Research Council Canada | Expired / Lapsed | 1990-11-26 | 1993-12-14 | 2010-11-26 | 0.0 yrs | 11 | |
| US4743870A | Longitudinal mode fiber acoustic waveguide with solid core and solid cladding | National Research Council Canada | Expired / Lapsed | 1986-09-23 | 1988-05-10 | 2006-09-23 | 0.0 yrs | 7 | |
| US4627734A | Three dimensional imaging method and device | National Research Council Canada | Expired / Lapsed | 1986-01-16 | 1986-12-09 | 2006-01-16 | 0.0 yrs | 27 | |
| US4477772A | Frequency compensator for a current-comparator capacitance bridge | National Research Council Canada | Expired / Lapsed | 1982-03-29 | 1984-10-16 | 2002-03-29 | 0.0 yrs | 10 | |
| CA1020341A | Verifying device for photogrammetric instrument | National Research Council Canada | Expired / Lapsed | 1975-09-17 | 1977-11-08 | 1995-09-17 | 0.0 yrs | 0 | |
| US3872858A | Echoencephalograph | National Research Council Canada | Expired / Lapsed | 1973-08-08 | 1975-03-25 | 1993-08-08 | 0.0 yrs | 17 | |
| US3294084A | Potential measuring and display apparatus, especially for electrocardiographic or like use | National Research Council Canada | Expired / Lapsed | 1964-05-14 | 1966-12-27 | 1984-05-14 | 0.0 yrs | 2 | |
| US3249913A | Ultrasonic underwater sound generator | National Research Council Canada | Expired / Lapsed | 1963-05-08 | 1966-05-03 | 1983-05-08 | 0.0 yrs | 2 | |
| US3180337A | Vascular everting device | National Research Council Canada | Expired / Lapsed | 1963-04-25 | 1965-04-27 | 1983-04-25 | 0.0 yrs | 2 | |
| US3087337A | Direct reading resistance thermometer | National Research Council Canada | Expired / Lapsed | 1958-04-28 | 1963-04-30 | 1978-04-28 | 0.0 yrs | 2 | |
| US3040748A | Vascular positioning method and device | National Research Council Canada | Expired / Lapsed | 1959-09-14 | 1962-06-26 | 1979-09-14 | 0.0 yrs | 0 | |
| US2973456A | Lamp flasher with daylight-responsive inhibiting means | National Research Council Canada | Expired / Lapsed | 1957-05-06 | 1961-02-28 | 1977-05-06 | 0.0 yrs | 0 | |
| US2940452A | Vascular evertor | National Research Council Canada | Expired / Lapsed | 1958-11-07 | 1960-06-14 | 1978-11-07 | 0.0 yrs | 0 | |
| US2698383A | Electronic counter | National Research Council Canada | Expired / Lapsed | 1952-06-16 | 1954-12-28 | 1972-06-16 | 0.0 yrs | 0 | |
| US2691100A | Electronic counter | National Research Council Canada | Expired / Lapsed | 1950-07-24 | 1954-10-05 | 1970-07-24 | 0.0 yrs | 0 | |
| US2645552A | Trace identifier for optical oscillographs | National Research Council Canada | Expired / Lapsed | 1951-09-04 | 1953-07-14 | 1971-09-04 | 0.0 yrs | 0 | |
| US2596480A | Directive antenna for microwaves | National Research Council Canada | Expired / Lapsed | 1947-11-20 | 1952-05-13 | 1967-11-20 | 0.0 yrs | 0 |