Kwan; David C. K.

Follow

Organization

Tsuen Wan, HK

Organizations

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Toy audio device
- Patent number 5,092,810
- Issue date Mar 3, 1992
- Lebensfeld; Steven
- David C. K. Kwan
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Toy action figures and speech and sound effects accessory therefor
- Patent number 5,073,140
- Issue date Dec 17, 1991
- Lebensfeld; Steven
- Steven Lebensfeld
- A63 - SPORTS GAMES AMUSEMENTS