US3486806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binocular periscope
Assignee: Carl Zeiss AG
•
Filing: 1964-06-01
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Granted: 1969-12-30
•
Expires: 1984-06-01
Abstract
No abstract record available.
Inventors
- 👤 Walter Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:52
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A PERISCOPE FOR SUBMARINES, PROVIDED WITH A VIEWING PRISM, A SINGLE OBJECTIVE AND TWO OCULARS AND HAVING AN INTERMEDIATE PUPIL IN THE SPACE OF THE PARALLEL PATH OF LIGHT RAYS BETWEEN SAID OBJECTIVE AND SAID OCULAR MEANS, THE IMPROVEMENT COMPRISING THE ARRANGEMENT OF TWO REFLECTOR SYSTEMS WITHIN SAID INTERMEDIATE PUPIL FOR DIVIDING UP THE BEAM OF LIGHT RAYS ENTERING THROUGH SAID VIEWING PRISM INTO TWO EQUAL SEPARATE PARTIAL LIGHT BEAMS WHICH
Claim 2
Dependent Claim
72 words
IN A PERISCOPE FOR SUBMARINES, PROVIDED WITH A VIEWING PRISM, A SINGLE OBJECTIVE AND TWO OCULARS AND HAVING AN INTERMEDIATE PUPIL IN THE SPACE OF THE PARALLEL PATH OF LIGHT RAYS BETWEEN SAID OBJECTIVE AND SAID OCULAR MEANS, THE IMPROVEMENT COMPRISING THE ARRANGEMENT OF TWO REFLECTOR SYSTEMS WITHIN SAID INTERMEDIATE PUPIL FOR DIVIDING UP THE BEAM OF LIGHT RAYS ENTERING THROUGH SAID VIEWING PRISM INTO TWO EQUAL SEPARATE PARTIAL LIGHT BEAMS WHICH
References Cited (Backward Citations)
US3155832A
Cited
US3195404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |