https://www.sipc.org/for-members/sipc-logo
SIPC - For Member Firms - SIPC Logo Rules
Securities Investor Protection Corporation
member firmslogo rulessipc
https://www.ptc.com/en/documents/policies/logo-rules-of-use
Logo Rules of Use | PTC
Jul 2, 2024 - Logos must always be used with the Logo Usage Guidelines, learn more about PTC's logo rules of use.
rules of uselogoptc
https://legalbeagle.com/12720413-logo-trademark-rules-in-the-us.html
Logo & Trademark Rules in the US | Legal Beagle
The U.S. Patent and Trademark Office defines a trademark as
in the uslogotrademarkruleslegal