US Patent: 870,900
|
| Time-controlled circuit-closing device
|
|
Patentees:
|
| Arthur H. Young (exact or similar names) - Chicago, IL |
| Carl A. Palmgren (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Feb. 16, 1907 |
| Granted: |
Nov. 12, 1907 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Jeff Joslin
Vintage Machinery entry for Palmgren Steel Products, Inc.
|
|
Description: |
| See patent 1,074,813 for an improved version of this factory time-clock. |
|
