BALANCE SHEET DETAILS

6 Months Ended

Jan. 31, 2013

The following tables provide details of selected balance sheet items:



	Jan 31, 2013			Jul 31, 2012
Accounts receivable:
Billed	$	515,468		$	584,449
Unbilled	78,525			82,720
Total	593,993			667,169
Less: Allowances for doubtful accounts	(13,962		)	(11,733		)
	$	580,031		$	655,436

Unbilled receivables principally relate to revenues accrued for long-term contracts recorded under the percentage-of-completion method of accounting.



	Jan 31, 2013		Jul 31, 2012
Inventory:
Raw materials and components	$	98,959	$	86,659
Work-in-process	105,627		92,427
Finished goods	200,065		185,680
	$	404,651	$	364,766



Property, plant and equipment:
Property, plant and equipment	$	1,658,387		$	1,608,718
Less: Accumulated depreciation and amortization	(894,205		)	(857,725		)
	$	764,182		$	750,993