| 1831 | Asphalt Works & Road Marking | Company Product |
| 1832 | Asri | Company Product |
| 1833 | Ass | Company Product |
| 1834 | Assemblies of God Churches | Company Product |
| 1835 | Assembling Machines | Company Product |
| 1836 | Assembling System Modular Line | Company Product |
| 1837 | Assembly Diamond Core Bits | Company Product |
| 1838 | Assembly Jig | Company Product |
| 1839 | Assembly Line Feeding Trolleys | Company Product |
| 1840 | Assembly Robots | Company Product |
| 1841 | Asset Management Companies | Company Product |
| 1842 | Asset Tracking System | Company Product |
| 1843 | Associations | Company Product |
| 1844 | Asthma | Company Product |
| 1845 | Astm A182 F51 | Company Product |
| 1846 | Astm A276 Type 431 | Company Product |
| 1847 | Aston Martin Genuine Parts | Company Product |
| 1848 | Astronomical Instruments | Company Product |
| 1849 | Atcor | Company Product |
| 1850 | Ate | Company Product |
| 1851 | Atex Floodlights | Company Product |
| 1852 | Atex Lamps | Company Product |
| 1853 | Atex Motors | Company Product |
| 1854 | Atex Valves | Company Product |
| 1855 | Athletic Fields, Stadiums & Arenas | Company Product |
| 1856 | Athletic Organizations | Company Product |
| 1857 | Atomising Desuperheaters | Company Product |
| 1858 | Atomize Pump Hydraulic Testing Kits | Company Product |
| 1859 | Atomized Micro-Mist Lubricators | Company Product |
| 1860 | Atrap U-Bolts | Company Product |