Patent search ap:("ELECTRONIC SECRETARY INC") AND inv:"ZIMMERMANN JOSEPH J" Page 1

1.

发明授权
Combination timing and telephone circuit controlling system 失效
Title translation: 组合定时和电话电路控制系统

公开(公告)号：US2653195A

公开(公告)日：1953-09-22

申请号：US22977951

申请日：1951-06-04

Applicant: ELECTRONIC SECRETARY INC

Inventor： ZIMMERMANN JOSEPH J

IPC: H04M1/06

CPC classification number: H04M1/06

2.

发明授权
Power supply switching circuit 失效
Title translation: 电源开关电路

公开(公告)号：US2769859A

公开(公告)日：1956-11-06

申请号：US46385054

申请日：1954-10-22

Applicant: ELECTRONIC SECRETARY INC

Inventor： ZIMMERMANN JOSEPH J

IPC: H04M1/65

CPC classification number: H04M1/65

3.

发明授权
Timing and holding apparatus 失效
Title translation: 计时器具

公开(公告)号：US2769860A

公开(公告)日：1956-11-06

申请号：US46397754

申请日：1954-10-22

Applicant: ELECTRONIC SECRETARY INC

Inventor： ZIMMERMANN JOSEPH J

IPC: H04M1/65

CPC classification number: H04M1/6515

4.

发明授权
Telephone answering and message recording device 失效
Title translation: 电话应答和消息记录设备

公开(公告)号：US2658107A

公开(公告)日：1953-11-03

申请号：US11775949

申请日：1949-09-26

Applicant: ELECTRONIC SECRETARY INC

Inventor： ZIMMERMANN JOSEPH J

IPC: H04M1/654

CPC classification number: H04M1/6545

Patent Agency Ranking