SEC Filings

Filing date	Form	Description	View
May 20, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000076.pdf 0000046080-19-000076.rtf
May 20, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000077.pdf 0000046080-19-000077.rtf
May 20, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000078.pdf 0000046080-19-000078.rtf
May 17, 2019	8-K	Report of unscheduled material events or corporate event	0000046080-19-000066.pdf 0000046080-19-000066.rtf 0000046080-19-000066.xls
May 07, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000064.pdf 0000046080-19-000064.rtf
May 03, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000060.pdf 0000046080-19-000060.rtf
May 03, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000061.pdf 0000046080-19-000061.rtf
May 03, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000062.pdf 0000046080-19-000062.rtf
May 03, 2019	4	Statement of changes in beneficial ownership of securities	0000046080-19-000063.pdf 0000046080-19-000063.rtf
May 01, 2019	10-Q	Quarterly report which provides a continuing view of a company's financial position	0000046080-19-000059.pdf 0000046080-19-000059.rtf 0000046080-19-000059.xls EX-101.INS - XBRL INSTANCE DOCUMENT