US Patent: 1,979,567
|
| Folding Rule
|
|
Patentee:
|
|
| Carl M. Nicholson (exact or similar names) - New York, NY |
|
|
Patent Dates:
|
| Applied: |
Jun. 10, 1932 |
| Granted: |
Nov. 06, 1934 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Russ Allen.
|
|
Description: |
| Inexpensive hinge joint for folding rules with the feature of using a pin and socket arrangement on the joint to secure the rule sections together.
Known examples are known with just the patent number marked but it is suspected that Lufkin is the manfacturer. |
|
