SEC Filings

Filing date	Form	Description	View
May 21, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000087.pdf 0000046080-18-000087.rtf
May 21, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000089.pdf 0000046080-18-000089.rtf
May 21, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000088.pdf 0000046080-18-000088.rtf
May 21, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000090.pdf 0000046080-18-000090.rtf
May 21, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000091.pdf 0000046080-18-000091.rtf
May 21, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000092.pdf 0000046080-18-000092.rtf
May 02, 2018	10-Q	Quarterly report which provides a continuing view of a company's financial position	0000046080-18-000079.pdf 0000046080-18-000079.rtf 0000046080-18-000079.xls EX-101.INS - XBRL INSTANCE DOCUMENT
May 01, 2018	8-K	Report of unscheduled material events or corporate event	0000046080-18-000077.pdf 0000046080-18-000077.rtf 0000046080-18-000077.xls
Apr 23, 2018	8-K	Report of unscheduled material events or corporate event	0000046080-18-000075.pdf 0000046080-18-000075.rtf 0000046080-18-000075.xls
Apr 03, 2018	4	Statement of changes in beneficial ownership of securities	0000046080-18-000067.pdf 0000046080-18-000067.rtf