Lid
US4275815A · kind A · utility
45Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jul 2, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00805
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A disposable plastic lid having a generally round closure wall and a depending skirt, with a stacking facility formed in the closure wall comprising a circular recess concentric with the wall and which recess has downwardly extending feet, substantially equal in circumferential extent and uniformly spaced about the periphery of the recess whereby the feet of one lid rest on the bottom wall of the recess of the next lower lid in the stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.