Patent US4119364A successfully refreshed from Google Patents.
US4119364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for displaying magnification in the field of view of a microscope
Assignee: Olympus Corp
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Filing: 1977-05-25
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Granted: 1978-10-10
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Expires: 1997-05-25
Abstract
Abstract A magnification display device for displaying magnification on a part in the observation field of view or photographing field of view of a zoom type microscope. The device comprises a mirror frame for the microscope incorporating with a zoom lens, and a magnification display plate rotatably arranged in the mirror frame. A predetermined magnification on the magnification display plate is displayed in the field of view of observation optical system, photographing optical system or the like.
Inventors
- 👤 Naoyuki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/36; G02B21/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A device for displaying magnification in the field of view of a microscope comprising a mirror frame for the microscope incorporating with a zoom lens, a magnification display plate rotatably arranged in the mirror frame, and said magnification display plate being rotated by interlocking with movement of the zoom lens to vary magnification, whereby a predetermined magnification on the magnification display plate is displayed in the field of view of observation optical system, photographing optical system or the like.
Claim 2
Independent Claim
79 words
A device for displaying magnification in the field of view of a microscope comprising a mirror frame for the microscope incorporating with a zoom lens, a magnification display plate rotatably arranged in the mirror frame, and said magnification display plate being rotated by interlocking with movement of the zoom lens to vary magnification, whereby a predetermined magnification on the magnification display plate is displayed in the field of view of observation optical system, photographing optical system or the like.
Claim 3
Dependent Claim
27 words
A device as claimed in claim 1, wherein said magnification display plate includes a transparent plate on which black letters such as numerals or letters are written.
Claim 4
Dependent Claim
24 words
A device as claimed in claim 1, wherein said magnification display plate includes an opaque plate on which numerals or letters are punched out.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-09 | 1982-04-10 | 1982-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-09 | 1986-04-10 | 1986-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-09 | 1990-04-10 | 1990-10-10 | $7700.00 | Window Closed / Lapsed |