Sequence counting and locking circuit
United States Patent 2968747
US Patent References:
Electric combination lock
- - 2436809

Impulse counting circuit
- - 2844317


Inventors:
Shillington, Harry R.
Publication Date:
01/17/1961
View Patent Images:
Download PDF 2968747 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
WESTERN ELECTRIC CO
Primary Class:
361/166
Other Classes:
340/523
International Classes:
G05B19/048