Patent Explorer
Browse, filter, and analyze 8 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB291402A | Improvements in regenerative heat exchange apparatus | Ljungstroms Angturbin AB | Expired / Lapsed | 1928-05-26 | — | 1948-05-26 | 0.0 yrs | 0 | |
| US2117673A | Hydraulic transmission | Ljungstroms Angturbin AB | Expired / Lapsed | 1935-05-07 | 1938-05-17 | 1955-05-07 | 0.0 yrs | 0 | |
| US2102634A | Variable speed power transmission | Ljungstroms Angturbin AB | Expired / Lapsed | 1933-03-03 | 1937-12-21 | 1953-03-03 | 0.0 yrs | 0 | |
| US1947477A | Turbine-driven compressor apparatus | Ljungstroms Angturbin AB | Expired / Lapsed | 1931-01-24 | 1934-02-20 | 1951-01-24 | 0.0 yrs | 0 | |
| US1912586A | Cooling for electric machines | Ljungstroms Angturbin AB | Expired / Lapsed | 1930-05-29 | 1933-06-06 | 1950-05-29 | 0.0 yrs | 0 | |
| US1900119A | Variable speed power transmission | Ljungstroms Angturbin AB | Expired / Lapsed | 1932-01-08 | 1933-03-07 | 1952-01-08 | 0.0 yrs | 0 | |
| US1762446A | Regenerative air preheater | Ljungstroms Angturbin AB | Expired / Lapsed | 1923-08-17 | 1930-06-10 | 1943-08-17 | 0.0 yrs | 0 | |
| US1654294A | Regenerative air or gas preheater | Ljungstroms Angturbin AB | Expired / Lapsed | 1922-08-03 | 1927-12-27 | 1942-08-03 | 0.0 yrs | 0 |