A t4g file extension is related to the Tommy Software Cad/Draw software and used for its drawings.
T4G file extension - Tommy Software Cad/Draw data
What is t4g file? How to open t4g files?
File type specification:
The t4g file extension is associated with the Cad/Draw a CAD drawing tool developed and released by Tommy Software in 1994 (version 2.0).
The t4g file stores CAD document created in the CAD/Draw.
The CAD/Draw is obsolete product without support from developer.
This t4g file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.