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
Acoustic transducer
US 3,403,234 A
Filed
: 09/11/1964
Issued
: 09/24/1968
Est. Priority Date
: 09/11/1964
Status: Expired due to Term
Alert
Pin
0
Associated Cases
0
Associated Defendants
0
Product Citations
0
Petitions
47
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
Roswell P. Barnes Jr
Original Assignee
Roswell P. Barnes Jr
Inventors
Barnes, Roswell P. Jr.
Application Number
US04/395,684
Time in Patent Office
1,474 Days
Field of Search
US Class Current
381/174
CPC Class Codes
G01D 5/24
by varying capacitance
G01G 3/16
measuring variations of fre...
G01L 1/14
by measuring variations in ...
G01L 5/14
for measuring the force of ...
H04R 19/02
Loudspeakers H04R19/01 take...
H04R 19/04
Microphones H04R19/01 takes...
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
×
×