I've thought about a few options:
1) Write a letter to their corporate address
2) Call their corporate office
3) Get an M&A attorney and have them contact their legal councel.
4) Find someone from the executive office or VP on LinkedIn, stalk them and get their attention.
We want buy the rights to their IP which is no longer been used for over 20 years. We'd first like to investigate if they possess documentation and the relevant code/diagrams/drawings/blueprints for the IP and then put an offer on the table.
Thank you very much and I hope it also helps others who are in the similar situation.
Would try to id anyone who worked on it at the time and then find them. Press releases, article quotes etc. They might know what went where or may still work there.
https://www.ibm.com/legal/licensing https://www.ge.com/licensing