GRETENER MAX has a total of 11 patent applications. Its first patent ever was published in 1934. It filed its patents most often in Switzerland and Canada. Its main competitors in its focus markets civil engineering are STUMPF JOHANNES, LI FAZHI and CHONGQING YUXINJIE CURTAIN WALL DOORS & WINDOWS ENG CO LTD.
| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 10 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Max Gretener | 8 |
| #2 | Gretener Max | 3 |
| Publication | Filing date | Title |
|---|---|---|
| CA380766A | Sealing or draught excluding device |