US120039A - Improvement in slate-frames - Google Patents
Improvement in slate-frames Download PDFInfo
- Publication number
- US120039A US120039A US120039DA US120039A US 120039 A US120039 A US 120039A US 120039D A US120039D A US 120039DA US 120039 A US120039 A US 120039A
- Authority
- US
- United States
- Prior art keywords
- slate
- frames
- improvement
- clay
- easton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004927 clay Substances 0.000 description 4
- 229910052570 clay Inorganic materials 0.000 description 4
- 210000000282 Nails Anatomy 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000010454 slate Substances 0.000 description 2
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76229—Concurrent filling of a plurality of trenches having a different trench shape or dimension, e.g. rectangular and V-shaped trenches, wide and narrow trenches, shallow and deep trenches
Definitions
- corner pieces may be firmly applied to the frame and can be hung up on a hook or nail. They may be strengthened by springs embedded therein.
- the elastic corner pieces O constructed with apertures and wings b b to adapt them for application to a slate-ame, as and for the purpose specied.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
YH.-Nl. CLAY. lmpro'vemenf in Slate Frames.
Patented om. 17,1871.
qiy.
UNITED STATES HENRY M. CLAY, OF EASTON, PENNSYLVANIA.
IMPROVEMENT IN SLATE-FRAMES.
Specification forming part of Letters Patent No. 120,039, dated October 1'7, 1871.
To all 'whom it may concern:
Be it known that I, HENRYv M. CLAY, of Easton, in the county of Northampton and State of Pennsylvania, have invented a new and useful Improvement in School-Slates; and I do'hereby declare that the following is a full, clear, and eX- act description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.
edges of the frame by glue, or in any suitable mannenY The advantage to the public of these corner pieces is that they may be firmly applied to the frame and can be hung up on a hook or nail. They may be strengthened by springs embedded therein.
Having thus described all that is necessary to a full understanding of'my invention, what I esteem to be new, and desire to protect by Letters Patent, is-
The elastic corner pieces O constructed with apertures and wings b b to adapt them for application to a slate-ame, as and for the purpose specied.
HENRY M. CLAY.
Witnesses WM. H. KELLER, J r., W. W. WILEDHAND.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US120039A true US120039A (en) | 1871-10-17 |
Family
ID=2189486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US120039D Expired - Lifetime US120039A (en) | Improvement in slate-frames |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US120039A (en) |
-
0
- US US120039D patent/US120039A/en not_active Expired - Lifetime
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