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.
You should keep your tax records for at least three years from the due date of the return or the date the return was filed, whichever is later. If the Internal Revenue Service requires you to keep your federal records for a longer period, you should keep your state records for the same period of time.ou should keep your tax records for at least three years from the due date of the return or the date the return was filed, whichever is later. If the Internal Revenue Service requires you to keep your federal records for a longer period, you should keep your state records for the same period of time.