Forward Citations = 58

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6 inventors (with patents filed for the assignee):

Gerald L Work (2 out of 9 patents)

Lloyd Seibert (2 out of 2 patents)

Lorne Stephenson (1 out of 1 patent)

4. George E Ellefsen (1 out of 1 patent)

5. Ira Britt (1 out of 1 patent)

6. Donald Morrison (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 4843527 - Matrix lamp bank display and light filtering assembly (1989-06-27),

2. D271219 - Disk for matrix display (1983-11-01),

3. 4389804 - Matrix display (1983-06-28),

4. 4380879 - Matrix display (1983-04-26),

5. 4115941 - Display and reset apparatus (1978-09-26),

6. 4053340 - Method for producing display sign panel (1977-10-11),

7. 4045895 - Display sign (1977-09-06),

Company Overview

American Sign and Indicator Corporation specializes in the design and manufacture of high-quality signage and industrial indicators. With over 20 years of experience in the industry, we provide customizable solutions for a wide range of applications, including safety signs, LED displays, and digital scoreboards.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

7 Patents

#40 in Spokane, WA

#928 in Washington

#39,929 in US

Spokane, WA, United States of America

American Sign and Indicator Corporation

Forward Citations = 58

6 inventors:

Gerald L Work (2 out of 9 patents)

Lloyd Seibert (2 out of 2 patents)

Lorne Stephenson (1 out of 1 patent)

4. George E Ellefsen (1 out of 1 patent)

5. Ira Britt (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: American Sign and Indicator Corporation. Retrieved from https://idiyas.com/company/american-sign-and-indicator

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]