Lawrence, Kansas
United States
4
2008-07-17
Steve Lang from Lawrence, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Portable gas detector
#2 | 2008-03-13Safety alert system
#3 | 2008-02-14Digital video surveillance system
#4 | 2008-02-14Flashing flare warning device
4115696 ⎘