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For the Inventor, By the Inventor

San Diego, CA, United States of America

David J Roldness

This inventor holds 4 USPTO granted patents. Top assignee: Pullman Incorporated. Active years: 1981-1982.

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 3

Forward Citations = 21(Granted Patents)


Company Filing History:

goldMedal4 out of 228 
 
Pullman Incorporated
 patents

Years Active: 1981-1982

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4 patents (USPTO):Explore Patents
1. 4324189 - Car end foldable doors locking device (1982-04-13),
2. 4318649 - Locking mechanism for B deck of auto-rack railway car (1982-03-09),
3. 4287833 - Auto carrier railway car (1981-09-08),
4. 4248557 - Railway car counter balanced tilting deck (1981-02-03),
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