Forward Citations = 77

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4 inventors (with patents filed for the assignee):

Larry L Stille (5 out of 5 patents)

Keith A Braun (4 out of 4 patents)

Dennis A Brumwell (2 out of 22 patents)

4. John F Johannsen (1 out of 1 patent)

6 patents: Sort by Forward Citations

1. 5144755 - Grain dryer control system and method using moisture sensor (1992-09-08),

2. 5106339 - Moisture monitor system and method for combine harvester (1992-04-21),

3. 4916830 - Grain dryer control system and method using moisture sensor (1990-04-17),

4. 4374621 - Apparatus for controlling power delivery to a grain stirring device (1983-02-22),

5. 4312750 - Grain cleaning apparatus (1982-01-26),

6. 4152840 - Grain dryer control system (1979-05-08),

Company Overview

David Manufacturing Company is a leading provider of high-quality industrial equipment and machinery. With over 50 years of experience, we specialize in designing and manufacturing custom solutions for a wide range of industries. Our exceptional team of engineers and technicians work tirelessly to ensure our products meet the highest standards of quality and reliability. Contact us today to learn more about how we can help your business thrive.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#3 in Mason City, IA

#277 in Iowa

#45,007 in US

Mason City, IA, United States of America

David Manufacturing Company

Forward Citations = 77

4 inventors:

Larry L Stille (5 out of 5 patents)

Keith A Braun (4 out of 4 patents)

Dennis A Brumwell (2 out of 22 patents)

4. John F Johannsen (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: David Manufacturing Company. Retrieved from https://idiyas.com/company/david-manufacturing-company

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]