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
Measuring method and apparatus
US 2,977,842 A
Filed
: 08/06/1958
Issued
: 04/04/1961
Est. Priority Date
: 08/06/1958
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
John A. Duke
Original Assignee
John A. Duke
Inventors
Duke, John A.
Application Number
US03/753,572
Time in Patent Office
972 Days
Field of Search
US Class Current
356/133
CPC Class Codes
G01N 21/431
Dip refractometers, e.g. us...
G01N 33/346
paper sheets
Y10S 73/11
Photoelectric cell
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
×
×