Patent US4009930A successfully refreshed from Google Patents.
US4009930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binomial microscope
Assignee: Konan Camera Research Institue Inc
•
Filing: 1975-10-20
•
Granted: 1977-03-01
•
Expires: 1995-10-20
Abstract
Abstract A binomial microscope having two parallel optical systems each including an objective lens, an erect prism and an ocular lens and wherein means are provided for moving each objective in a direction parallel to its optical axis to position the observed image in the vicinity of the object being observed.
Inventors
- 👤 Kuniomi Abe
- 👤 Yuji Maekawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:53
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/18; G02B21/20; G02B21/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A binomial microscope comprising an auxiliary objective lens and a pair of optical systems having substantially parallel optical axes and being arranged in the rear of said auxiliary objective, each of said optical systems including an objective lens, an erect prism and an ocular, wherein said optical system further includes means for moving the last said objective lens in a direction substantially parallel to said optical axis while maintaining the remaining optical elements in fixed positions.
Claim 2
Dependent Claim
76 words
A binomial microscope comprising an auxiliary objective lens and a pair of optical systems having substantially parallel optical axes and being arranged in the rear of said auxiliary objective, each of said optical systems including an objective lens, an erect prism and an ocular, wherein said optical system further includes means for moving the last said objective lens in a direction substantially parallel to said optical axis while maintaining the remaining optical elements in fixed positions.
References Cited (Backward Citations)
US3434772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |