SEC Filings

Filing date	Description	Form	Filing Group	View
04/6/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000056.pdf 0000006201-20-000056.rtf 0000006201-20-000056.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
04/3/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000054.pdf 0000006201-20-000054.rtf 0000006201-20-000054.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
04/1/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000051.pdf 0000006201-20-000051.rtf 0000006201-20-000051.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/27/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000045.pdf 0000006201-20-000045.rtf 0000006201-20-000045.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/27/20	Amendment to a previously filed 8-K	8-K/A	Current Reports	0000006201-20-000048.pdf 0000006201-20-000048.rtf 0000006201-20-000048.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/27/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000049.pdf 0000006201-20-000049.rtf 0000006201-20-000049.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/25/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000043.pdf 0000006201-20-000043.rtf 0000006201-20-000043.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/19/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000038.pdf 0000006201-20-000038.rtf 0000006201-20-000038.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/19/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000040.pdf 0000006201-20-000040.rtf 0000006201-20-000040.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
03/17/20	Report of unscheduled material events or corporate event	8-K	Current Reports	0000006201-20-000035.pdf 0000006201-20-000035.rtf 0000006201-20-000035.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML

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