32. Extension of term of patent. 33. Restoration of application deemed to have been withdrawn or lapsed patent. 34. Surrender of patents. 35. Utility certificates. 36. Special provisions relating to utility certificates. 37. Unity of invention. 38. Classification of patents. 39. Disclosure to be disregarded for prior art purposes. 40. Time limits for furnishing information. 41. Exploitation of patented invention by the Government or third persons authorised by the Government. 42. Hearing. Schedules First Schedule Forms. Second Schedule Fees.