US3943531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for producing ring patterns from electron diffraction spot patterns
Assignee: Sun Ventures Inc
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Filing: 1974-07-18
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Granted: 1976-03-09
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Expires: 1994-07-18
Abstract
Abstract An apparatus for producing ring patterns from electron diffraction spot patterns, which comprises in combination a transparent disc rotatably mounted, rotating means for said disc, a light source beneath said disc, and photographic means above said disc. The invention also embodies a method for producing ring pattern negatives from an electron diffraction spot pattern negative by photographing the spot pattern negative while it revolves at a speed of at least about 0.5 rps.
Inventors
- 👤 Dorothy F. O'Reilly
- 👤 James J. Byrd
- 👤 Allan T. Finlayson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:36
CPC Classifications
G; G03; G03B; G03B29/00; G01; G01N; G01N23/00; G01N23/20; G01N23/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
An apparatus for producing ring patterns from an electron diffraction spot pattern which comprises in combination, a frame supporting a rotatably mounted transparent disc having a center hole for centering an electron diffraction spot pattern negative on said disc, rim drive means for said disc, a light source mounted on said frame beneath said disc and directed upwardly at said disc, and photographic means mounted on said frame above said disc to photograph the ring pattern generated when said mounted spot pattern negative is revolved.
Claim 2
Independent Claim
85 words
An apparatus for producing ring patterns from an electron diffraction spot pattern which comprises in combination, a frame supporting a rotatably mounted transparent disc having a center hole for centering an electron diffraction spot pattern negative on said disc, rim drive means for said disc, a light source mounted on said frame beneath said disc and directed upwardly at said disc, and photographic means mounted on said frame above said disc to photograph the ring pattern generated when said mounted spot pattern negative is revolved.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |