Invention Grant
- Patent Title: Metering of telephonic services.
- Patent Title (中): 电话服务计量。
-
Application No.: US1904230587Application Date: 1904-10-29
-
Publication No.: US817920APublication Date: 1906-04-17
- Inventor: KITSEE ISIDOR
- Applicant: KITSEE ISIDOR
- Assignee: Isidor Kitsee
- Current Assignee: Isidor Kitsee
- Priority: US1904230587 1904-10-29
Information query
