Invention Grant
- Patent Title: Burglar alarm
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Application No.: US52171021Application Date: 1921-12-12
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Publication No.: US1469969APublication Date: 1923-10-09
- Inventor: SPARKS FRED E
- Applicant: SPARKS FRED E
- Assignee: Fred E Sparks
- Current Assignee: Fred E Sparks
- Priority: US52171021 1921-12-12
- Main IPC: G08B13/02
- IPC: G08B13/02
Information query
