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
Empty indicator for raw coal pipes and the like
US 2,745,920 A
Filed
: 06/18/1951
Issued
: 05/15/1956
Est. Priority Date
: 06/18/1951
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
Lester M. Keephart
Original Assignee
Lester M. Keephart
Inventors
Keephart, Lester M.
Application Number
US03/232,083
Time in Patent Office
1,793 Days
Field of Search
US Class Current
200/61.21
CPC Class Codes
F23K 2203/008
Feeding devices for pulveru...
F23K 3/00
Feeding or distributing of ...
G01F 23/185
for discrete levels
Subscription Required
This content requires a subscription to view
Contact Us
or
Login
×
×