(b)any company formed after the date aforesaid, whether before or after the commencement of this Act, in pursuance of any Act of Parliament other than this Act or of any other Indian law (including a law in force in a Part B State), or of any Act of Parliament of the United Kingdom or Letters Patent in force in India, or being otherwise duly constituted according to law, and consisting of seven or more members, may at any time register under this Act as an unlimited company, or as a company limited by shares, or as a company limited by guarantee; and the registration shall not be invalid by reason only that it has taken place with a view to the company's being wound-up: