Invention Grant
- Patent Title: Display apparatus
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Application No.: US28771928Application Date: 1928-06-23
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Publication No.: US1750642APublication Date: 1930-03-18
- Inventor: MCDONALD LESLIE R
- Applicant: MCDONALD LESLIE R
- Assignee: Leslie R Mcdonald
- Current Assignee: Leslie R Mcdonald
- Priority: US28771928 1928-06-23
- Main IPC: G09F11/34
- IPC: G09F11/34
Information query
