Solutions
Empower Patent Analytics
Empower Litigation Defense
Empower License Manager
Use Cases
Patent Licensing
Portfolio Management
Litigation Strategy
Market Intelligence
Data Platform
Contact Us
Login
×
View as Organization
Recording device
US 2,392,467 A
Filed
: 05/04/1942
Issued
: 01/08/1946
Est. Priority Date
: 05/04/1942
Status: Expired due to Term
Alert
Pin
0
Associated Cases
0
Associated Defendants
0
Product Citations
0
Petitions
3
Forward Citations
0
Assignments
First Claim
Patent Images
View all claims
0 Assignments
Timeline View
Assignment View
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
0 Petitions
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
Accused Products
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
3 Citations
0 Claims
Specification
Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
Current Assignee
George C. Engel
,
Leslie S. Lynch Jr
Original Assignee
George C. Engel
,
Leslie S. Lynch Jr
Inventors
Engel, George C.
,
Lynch, Leslie S. Jr.
Application Number
US02/441,756
Time in Patent Office
1,345 Days
Field of Search
US Class Current
346/33.00R
CPC Class Codes
G07C 3/045
Mechanical counters or clocks
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
×
×