US Patent: 372,012
|
| Electrical resistance-board
|
|
Patentee:
|
|
| Irving W. Colburn (exact or similar names) - Fitchburg, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Feb. 08, 1887 |
| Granted: |
Oct. 25, 1887 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Jeff Joslin
|
|
Description: |
| "My invention relates to improvements in electrical resistance-boards to be used in connection with dynamo-electric machines for the purpose of regulating the intensity of the current." |
|
