US3074315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflecting attachment for telescopes
Assignee: Keuffel and Esser Co
•
Filing: 1958-11-12
•
Granted: 1963-01-22
•
Expires: 1978-11-12
Abstract
No abstract record available.
Inventors
- 👤 Bobly H Seibel
- 👤 Conway D Hillman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:53
CPC Classifications
G; G02; G02B; G02B23/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
142 words
AN OPTICAL DEVICE FOR MOUNTING IN FRONT OF A TELESCOPE, COMPRISING A PRISM HAVING A REFLECTING SURFACE AND TWO LIGHT TRANSMITTING SURFACES WITH THE LINES OF INTERSECTION OF SAID SURFACES BEING PARALLEL, MOUNTING MEANS FOR ADJUSTABLY AND ROTATABLY MOUNTING SAID PRISM ON SAID TELESCOPE WITH SAID PRISM HAVING ITS AXIS OF ROTATION PARALLEL TO SAID LINES OF INTERSECTION OF SAID SURFACES AND PERPENDICULAR TO THE OPTICAL AXIS OF SAID TELESCOPE, WHEREBY ROTATING SAID PRISM CAUSES THE LINE OF SIGHT OF SAID TELESCOPE TO SWEEP A PLANE CONTAINING SAID TELESCOPE OPTICAL AXIS PERPENDICULAR TO SAID PRISM AXIS OF ROTATION, AND A SECOND REFLECTING SURFACE MOUNTED COAXIALLY WITH SAID PRISM ON SAID MOUNTING MEANS AND BEING NORMAL TO SAID PRISM AXIS OF ROTATION, WHEREBY SAID PRISM AXIS OF ROTATION CAN BE ALIGNED PARALLEL TO ANOTHER LINE OF SIGHT PERPENDICULAR TO SAID SECOND REFLECTING SURFACE.
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |