Waveguide type dielectric resonators - Part 4-1: Blank detail specification (Endorsed by AENOR in September of 2005.)
Edition 2005-09-01

Electrostatics - Part 4-1: Standard test methods for specific applications - Electrical resistance of floor coverings and installed floors
Edition 2005-11-30

Electrostatics - Part 4-1: Standard test methods for specific applications - Electrical resistance of floor coverings and installed floors
Edition 2015-11-04

Liquid crystal display devices - Part 4-1: Matrix colour LCD modules - Essential ratings and characteristics (Endorsed by AENOR in April of 2005.)
Edition 2005-04-01

Electricity metering equipment - Dependability - Part 41: Reliability prediction (IEC 62059-41:2006).
Edition 2006-12-05

Dynamic modules - Part 4-1: Software and hardware interface - 1 x 9 wavelength selective switch (Endorsed by AENOR in July of 2016.)
Edition 2016-07-01

Electric Motor-Operated Hand-Held Tools, Transportable Tools and Lawn and Garden Machinery - Safety - Part 4-1: Particular requirements for chain saws (Endorsed by Asociación Española de Normalización in April of 2020.)
Edition 2020-04-01

Fixed capacitors for use in electronic equipment - Part 4-1: Blank detail specification - Fixed aluminium electrolytic capacitors with non-solid electrolyte - Assessment level EZ
Edition 2010-06-21

Textiles - Qualitative and quantitative analysis of some cellulose fibres (lyocell, cupro) and their blends - Part 4-1: Fibre identification using scanning electron microscopy and spectral analysis methods
Edition 2023-01-20

FOTP- 41 Compressive Loading Resistance of Optical Fiber Cables
Edition 1993-12