SEC Filings

Filing date	Form	Description	View
Feb 24, 2021	10-K	Annual report which provides a comprehensive overview of the company for the past year	0000046080-21-000035.pdf 0000046080-21-000035.rtf 0000046080-21-000035.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Feb 23, 2022	10-K	Annual report which provides a comprehensive overview of the company for the past year	0000046080-22-000023.pdf 0000046080-22-000023.rtf 0000046080-22-000023.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Feb 22, 2023	10-K	Annual report which provides a comprehensive overview of the company for the past year	0000046080-23-000017.pdf 0000046080-23-000017.rtf 0000046080-23-000017.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Feb 28, 2024	10-K	Annual report which provides a comprehensive overview of the company for the past year	0000046080-24-000034.pdf 0000046080-24-000034.rtf 0000046080-24-000034.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
Mar 29, 1996	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	0000046080-96-000005.pdf 0000046080-96-000005.rtf 0000046080-96-000005.xls
Mar 28, 1997	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	0000046080-97-000004.pdf 0000046080-97-000004.rtf 0000046080-97-000004.xls
Mar 27, 1998	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	0000046080-98-000005.pdf 0000046080-98-000005.rtf 0000046080-98-000005.xls
Mar 29, 1999	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	0000046080-99-000005.pdf 0000046080-99-000005.rtf 0000046080-99-000005.xls
Mar 24, 2000	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	0000046080-00-000003.pdf 0000046080-00-000003.rtf 0000046080-00-000003.xls
Apr 02, 2001	10-K405	Annual report. The Regulation S-K Item 405 box on the cover page is checked	0000046080-01-000003.pdf 0000046080-01-000003.rtf 0000046080-01-000003.xls

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