Patent US-1889-412194
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Arrangement of several slates with a slot for a pencil. No stated or obvious aeronautical application.
- Inventor location: Cincinnati, Hamilton county, OH (FIPSloc=39061, imputed by HistPat)
Sources
- Patent 412194 document and bibliographic info on espacenet
- Patent 412194 at google patents
| Year filed | 1889 |
|---|---|
| Year granted | 1889 |
| Office | US |
| Patent number | 412194 |
| Inventors | Solomon Marks |
| Inventor country | US |
| Inventor location | Cincinnati, Hamilton county, OH, Ohio |
| Applicant person | Solomon Marks |
| Applicant firm | Paragon Slate Company |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | School-slate |
| English title | School-slate |
| Tech fields | |
| Filing date | 1889-05-18 |
| Full specification filed date | |
| Application number | |
| Grant date | 1889-10-01 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 0 |
| Serial number | 311332 |
| Patent agent | |
| Assigned to | Paragon Slate Company |
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| Family year | 1889 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
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| Number of diagram pages | |
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