| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 7 | |
| #2 | Germany | 3 | |
| #3 | Switzerland | 2 | |
| #4 | Denmark | 2 | |
| #5 | United States | 2 | |
| #6 | Canada | 1 | |
| #7 | Czechoslovakia | 1 | |
| #8 | German Democratic Republic | 1 | |
| #9 | Finland | 1 | |
| #10 | United Kingdom | 1 | |
| #11 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Heat-exchange device details | |
| #2 | Heat-exchanger without contact | |
| #3 | Steam turbines | |
| #4 | Pistons and sealings | |
| #5 | Unspecified technologies | |
| #6 | Unspecified technologies | |
| #7 | Punching metal | |
| #8 | Making metal sheets |
| # | Name | Total Patents |
|---|---|---|
| #1 | Oestbo John David Bertil | 10 |
| #2 | Oestbo John D B | 5 |
| #3 | Oestbo Jon David Bertil | 1 |
| #4 | Alvar Andersson Sven Erik | 1 |
| #5 | David Bertil Oestbo John | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4263966A | Heat-exchanger | |
| FI770043A | Vaermevaexlare | |
| NL7512251A | Seal between parts of housing - comprises strip of high grade material secured to rail of housing material | |
| CS210602B2 | Sealing of gaps by sections of multiple-part box body | |
| DK141178B | Method and assembly rail for sealing the transitions between the sheath portions of a multi-part sheath, e.g. a two-part turbine housing or two-part hot water pump housing. | |
| ATA289975A | Method and device for sealing the connections of housing parts of a multipart housing | |
| GB1056104A | Improvements in or relating to heat-exchangers, pre-heaters and economizers |