Hangzhou
China
4
2025-05-01
The entities that hold a legal rights for patent applications filed by inventor Ma Jun:
Jun Ma from Hangzhou, CN has applied for patents for these inventions. The list has both pending applications and granted patents:
Lockset and door lock
#2 | 2025-02-20AUTOMATIC CONVEYOR DEVICE
#3 | 2021-01-07FACIAL RECOGNITION PAYMENT
#4 | 2020-03-19Handrail automatically tensioning system and a method for adjusting tension level of handrail
2676028 ⎘