Forward Citations = 81

Loading Chart...

8 inventors (with patents filed for the assignee):

John D Eckel (3 out of 8 patents)

L Harvey Wicklund (2 out of 3 patents)

Larry D Zorb (2 out of 3 patents)

4. Joe L Daghe (1 out of 2 patents)

5. Warren G Heidbrier (1 out of 2 patents)

6. Walter G Heidbrier (1 out of 1 patent)

7. Joseph L Daghe (1 out of 3 patents)

8. Amos M Einerson (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 5102098 - Tamperproof rotary valve (1992-04-07),

2. 5076541 - Tamperproof rotary valve (1991-12-31),

3. 4862744 - Holder and shut off valve for a water flow control device (1989-09-05),

4. 4691727 - Flow conditioning device resetter assembly (1987-09-08),

5. 4303833 - Natural energy operated pump system (1981-12-01),

A.Y. McDonald Manufacturing Company is a leading manufacturer of water works brass, plumbing valves, pumps and water systems, and high pressure gas valves and meter bars. With a history dating back to 1856, A.Y. McDonald has built a reputation for delivering high-quality products and exceptional customer service.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

5 Patents

#5 in Dubuque, IA

#304 in Iowa

#50,171 in US

Dubuque, IA, United States of America

A. Y. Mcdonald Manufacturing Company