CT Scanners. Usually this instrument is used in the medical field, but it is also used in paleontology. In paleontology these are used to identify the reptiles and animals that are found in rocks without actually cracking the rocks.
4. You do not file a return: Keep records indefinitely. 5. You file a claim for credit or refund after you file your return: Keep records for three years from the date you filed your original return or two years from the date you paid the tax, whichever is later. 6. You file a claim for a loss from worthless securities or bad debt deduction: Keep records for seven years. 7.
Howard, Kimberly. Keep your tax records for a minimum of 3 years. After that, it depends on your situation as to the length of time. If you wrote off a bad debt, better keep them for 7 years. If you have a small business, 7 years may serve you best. Be sure to keep not only a copy of the return, but all the supporting documents.