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
Teaching and testing device
US 3,389,479 A
Filed
: 08/03/1965
Issued
: 06/25/1968
Est. Priority Date
: 08/03/1965
Status: Expired due to Term
Alert
Pin
0
Associated Cases
0
Associated Defendants
0
Product Citations
0
Petitions
4
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
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
Philip Gross
Original Assignee
Philip Gross
Inventors
Gross, Philip
Application Number
US04/476,853
Time in Patent Office
1,057 Days
Field of Search
US Class Current
434/340
CPC Class Codes
G09B 7/066
with answer indicating card...
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
×
×