Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Energy saving elevator apparatus with maintaining potential energy by intellectual control variable mass

Energy saving elevator apparatus with maintaining potential energy by intellectual control variable mass

US Patent 9630807 · Granted Apr 25, 2017

Assignee

No assignee recorded.

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Access node for providing network service, storage cloud service and grading of 2025
Multi-functional vehicle autonomously operable under multi-terrain conditions2024
Portable demolition device2024
Hybrid-layered apparatus and bulletproof structure having the same2024
Energy-saving device for rapidly and infinitely compressing air2024
Hybrid-layered cell and bulletproof structure having the same2024
Recyclable, energy-saving and environmental-friendly packing box applicable to p2023
Method, system and device for permitting unfamiliar call2023
Portable energy-saving and environment-friendly electric vehicle2023
Airport capable of saving energy and resources and improving take-off and landin2023
Multi-purpose backpack2022
Method, system and device for permitting unfamiliar call2022