Patent US4449795A successfully refreshed from Google Patents.
US4449795A
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US
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Stereoscope with tongue and grooves
Assignee: K K YAMADA KOGAKU SEISAKU-SHO A CORP OF JAPAN
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Filing: 1981-12-30
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Granted: 1984-05-22
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Expires: 2001-12-30
Abstract
Abstract A stereoscope comprises a pair of eye pieces and an objective lens disposed on a frame. The center of the objective lens is fitted to be deviated from the optical axis of the eye piece. One or both eye pieces are slidable to the frame. The stereoscope can be replaced by a microscope body constituted by an eye piece and an objective lens, through the intermediary of a grip extended from the frame.
Inventors
- 👤 Toshikatsu Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:03
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20; G02B21/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
A stereoscope comprising: a. a frame; b. an objective lens having an optical axis, said objective lens being mounted in said frame; c. a pair of eye pieces each having an optical axis which intersect said objective lens at points laterally spaced from its optical axis; d. a pair of carriers, one for each of said eye pieces; and e. tongue and grooves included on the said frame and carriers for mounting said carriers on said frame and for moving said carriers relative to said frame to adjust the distance between the optical axis of said eye pieces and their points of insection with said objective lens relative to its optical axis.
Claim 2
Dependent Claim
112 words
A stereoscope comprising: a. a frame; b. an objective lens having an optical axis, said objective lens being mounted in said frame; c. a pair of eye pieces each having an optical axis which intersect said objective lens at points laterally spaced from its optical axis; d. a pair of carriers, one for each of said eye pieces; and e. tongue and grooves included on the said frame and carriers for mounting said carriers on said frame and for moving said carriers relative to said frame to adjust the distance between the optical axis of said eye pieces and their points of insection with said objective lens relative to its optical axis.
Claim 3
Dependent Claim
24 words
The stereoscope of claim 1, wherein light passing on the optical axis of objective lens is communicated to neither one of said eye pieces.
Claim 4
Dependent Claim
23 words
The stereoscope of claim 1, further including a stand having a sample holder, and means for temporarily mounting said frame to said stand.
References Cited (Backward Citations)
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Cited
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Cited
GB189814088A
Cited
DE332025C
Cited
US1470670A
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DE2021864A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |