Serveur Uspto
Serveur Ibm
Date de Brevet
Inventeurs
U.S. Cl.
4,711,982
12/1987
Millman.
219/10.55R
5,180,896
1/1993
Gibby et al.
219/10.55A
5,308,944
5/1994
Stone-Elander et al.
219/687
5,360,964
11/1994
Park.
219/689
5,398,010
3/1995
Klebe.
333/239