| 发明名称 |
Telephone interface for mask |
| 摘要 |
A telephone interface unit enables a user of a personal protection device, such as a mask, to speak and hear over a standard telephone, without removing the personal protection device.
|
| 申请公布号 |
US2005201548(A1) |
申请公布日期 |
2005.09.15 |
| 申请号 |
US20050078569 |
申请日期 |
2005.03.11 |
| 申请人 |
BIRLI JOSEPH;TORRIERI FRANK;ZIMET DAN;KRNC MIKE |
发明人 |
BIRLI JOSEPH;TORRIERI FRANK;ZIMET DAN;KRNC MIKE |
| 分类号 |
H04M1/00;H04M9/00;(IPC1-7):H04M1/00 |
主分类号 |
H04M1/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
