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
Control circuit for emergency relief valve of a dredge
US 2,644,400 A
Filed
: 06/24/1950
Issued
: 07/07/1953
Est. Priority Date
: 06/24/1950
Status: Expired due to Term
Alert
Pin
0
Associated Cases
0
Associated Defendants
0
Product Citations
0
Petitions
26
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
David L. Hofer
Original Assignee
David L. Hofer
Inventors
Hofer, David L.
Application Number
US03/170,075
Time in Patent Office
1,109 Days
Field of Search
US Class Current
417/282
CPC Class Codes
E02F 3/907
Measuring or control device...
F16K 1/221
specially adapted operating...
F16K 31/1221
one side of the piston bein...
F16K 31/1223
one side of the piston bein...
Y10T 137/7769
Single acting fluid servo
Y10T 137/86389
Programmer or timer
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
×
×