Patent US-1889-412194
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| Year filed | |
|---|---|
| Year granted | 1889 |
| Office | US |
| Patent number | 412194 |
| Inventors | Solomon Marks |
| Inventor country | US |
| Inventor location | Cincinnati, Hamilton county, Ohio |
| Applicant person | Paragon Slate Company |
| Applicant firm | OH |
| Applicant type | |
| Applicant is inventor? | |
| Original title | 1 |
| English title | School-slate |
| Tech fields | School-slate |
| Filing date | |
| Full specification filed date | 1889-05-18 |
| Application number | |
| Grant date | |
| Granted? | 1889-10-01 |
| Publication date | 1 |
| Supplementary to patent | |
| Related to aircraft? | |
| Serial number | 0 |
| Patent agent | 311332 |
| Assigned to | |
| National tech categories | Paragon Slate Company |
| IPCs | OH |
| CPCs | |
| Family year | |
| First filing? | |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | |
| Number of diagram pages | |
| Number of figures | |
| Number of claims |
Sources
- Patent 412194 document and bibliographic info on espacenet
- Patent 412194 at google patents arrangement of several slates with a slot for a pencil
Inventor location (imputed by HistPat): Cincinnati, OH, Hamilton county, OH (FIPSloc=39061)
