NOTE 2. Acquisitions 3M makes acquisitions of certain businesses from time to time that the Company feels align with its strategic intent with respect to, among other factors, growth markets and adjacent product lines or technologies. The impact on the consolidated balance sheet of the purchase price allocations related to acquisitions, including adjustments relative to other acquisitions within the allocation period, follows. The allocations of purchase price related to the acquisitions of the business purchased from Federal Signal Corp. in September 2012 , and Ceradyne , Inc. in November 2012 are considered preliminary, largely with respect to certain acquired property, plant and equipment; intangible assets ; and tax- related assets and liabilities. Adjustments in 2012 to the preliminary purchase price allocations of other acquisitions within the allocation period were not material and primarily related to the 2011 acquisitions of Winterthur Technologie AG and the business acquired from GPI Group. 2012 Acquisition Activity (Millions) Other Total Asset (Liability) Ceradyne, Inc. Acquisitions Accounts receivable $ 55 $ 29 $ 84 Inventory 112 13 125 Other current assets 36 1 37 Marketable securities 250 ? 250 Property, plant, and equipment 238 3 241 Purchased finite-lived intangible assets 127 86 213 Purchased indefinite-lived intangible assets ? 2 2 Purchased goodwill 198 141 339 Accounts payable and other liabilities, net of other assets (100) (27) (127) Interest bearing debt (93) (3) (96) Deferred tax asset/(liability) (25) 3 (22) Net assets acquired $ 798 $ 248 $ 1,046 Supplemental information: Cash paid $ 850 $ 248 $ 1,098 Less: Cash acquired 52 ? 52 Cash paid, net of cash acquired $ 798 $ 248 $ 1,046 2011 Acquisitions Activity (Millions) Winterthur Other Total Asset (Liability) Technologie AG Acquisitions Accounts receivable $ 45 $ 61 $ 106 Inventory 69 59 128 Other current assets 6 36 42 Property, plant, and equipment 73 102 175 Purchased finite-lived intangible assets 226 116 342 Purchased goodwill 147 112