| 1621 | Frequency | Company Product |
| 1622 | Frequency Converters | Company Product |
| 1623 | Frequency Counter | Company Product |
| 1624 | Frequency Counters | Company Product |
| 1625 | Frequency Drives | Company Product |
| 1626 | Frequency Inverter Repair | Company Product |
| 1627 | Frequency Inverters | Company Product |
| 1628 | Frequency Measurement | Company Product |
| 1629 | Frequency Meters | Company Product |
| 1630 | Frequency Monitoring Relay | Company Product |
| 1631 | Frequency Monitoring Relays | Company Product |
| 1632 | Frequency Relay | Company Product |
| 1633 | Frequency Stabilizers | Company Product |
| 1634 | Frequency Synthesizers | Company Product |
| 1635 | Frequency Transducer | Company Product |
| 1636 | Fresh Coconut | Company Product |
| 1637 | Fresh Fruits | Company Product |
| 1638 | Fresh Vegetable Tapes | Company Product |
| 1639 | Fresh Vegetables | Company Product |
| 1640 | Fresh Water Generators | Company Product |
| 1641 | Fresh Water Systems | Company Product |
| 1642 | Fret Saw | Company Product |
| 1643 | Friction Bearing Oil Lubrication | Company Product |
| 1644 | Friction Clutches | Company Product |
| 1645 | Friction & Components | Company Product |
| 1646 | Friction Disc | Company Product |
| 1647 | Friction Materials | Company Product |
| 1648 | Friction Springs | Company Product |
| 1649 | Frictions | Company Product |
| 1650 | Fridge | Company Product |