Patent US-1900-648571
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Year filed | 1900 |
---|---|
Year granted | 1900 |
Office | US |
Patent number | 648571 |
Inventors | Frank O. ORTENGREN |
Inventor country | US |
Applicant person | |
Applicant firm | |
Applicant type | |
Applicant is inventor? | 1 |
Original title | Railroad-rail-end grinder |
English title | Railroad-rail-end grinder |
Tech fields | |
Filing date | 1900-01-08 |
Full specification filed date | |
Application number | |
Grant date | 1900-05-01 |
Granted? | 1 |
Publication date | |
Supplementary to patent | |
Related to aircraft? | No |
Serial number | 711 |
Patent agent | |
Assigned to | |
National tech categories | |
IPCs | |
CPCs | |
Family year | 1900 |
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
- PTO 89-1.51
- espacenet device for machining railroad track
Inventor location (imputed by HistPat): Chicago, IL, Cook county, IL (FIPSloc=17031)