United States Patent 3304683
Inventors:
Ferreira, Anthony F.
Publication Date:
02/21/1967
Assignee:
TEXAS INSTRUMENTS INC
Other Classes:
52/239, 52/781, 256/24, 256/65.07, 256/65.14
International Classes:
E04B2/58; E04B2/58
Foreign References:
| AU205507B | | | | |
| CA651525A | | | | |
| FR1271108A | | | | |