Clinton, CT, United States of America

Nicholas A Ketre

This inventor holds 1 USPTO granted patent. Top assignee: The Marlin Firearms Company. Active years: 1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Nicholas A Ketre. Retrieved from https://idiyas.com/inventor/nicholas-a-ketre

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 1984

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1 patent (USPTO):Explore Patents

Title: The Innovative Contributions of Nicholas A Ketre

Introduction

Nicholas A Ketre, based in Clinton, Connecticut, is an esteemed inventor known for his significant contribution to firearm technology. With a patent to his name, he has made strides in enhancing the safety and functionality of firearms through clever engineering.

Latest Patents

Ketre's notable patent is the "Last shot bolt hold-open device," which serves as an action disabling device in firearms. This innovative device incorporates a spring-closed breech bolt, a tubular magazine, and a pivoted cartridge lifter. Its mechanism features an operating arm, which is pivoted to a fixed part of the action, allowing it to swing into active and inactive positions to either engage or disengage from the breech bolt's closing path. This design ensures that the breech bolt is halted upon partial closure when the lifter has over-travelled in lift direction due to the absence of a cartridge. The operating arm is also connected to a double-arm lever, providing accessibility for an operator's finger to switch it back to its inactive position.

Career Highlights

Nicholas A Ketre has demonstrated a strong commitment to innovation throughout his career at the Marlin Firearms Company. His work is characterized by a focus on improving firearm efficiency and safety through inventive technology. The development of his bolt hold-open device reflects his expertise in the field, showcasing his ability to combine functionality with safety measures.

Collaborations

During his time at Marlin Firearms Company, Ketre has collaborated with fellow innovator William E Osborne. Their teamwork underscores the collaborative spirit of innovation and the importance of diverse ideas in enhancing firearm designs. Collaborating with Osborne has undoubtedly contributed to the development of advanced safety features in their product lines.

Conclusion

Nicholas A Ketre stands out as a dedicated inventor with a unique contribution to firearm technology through his patent on the last shot bolt hold-open device. His innovative mindset and collaborative efforts within the Marlin Firearms Company illustrate the essence of creativity and safety in modern firearm design. As he continues to pave the way for advancements in this field, his work serves as an inspiration for future inventors and engineers.

Profile summary based on public USPTO records.
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]
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