US3130634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photomicrographic equipments
Assignee: C Reichert Optische Werke AG
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Filing: 1962-05-31
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Granted: 1964-04-28
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Kropp Earl
- 👤 Millendorfer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A PHOTOMICROGRAPHIC APPARATUS COMPRISING IN COMBINATION, AN ELECTROMAGNETIC SHUTTER, AN ELECTRIC TIMING DEVICE ARRANGED TO CONTROL OPENING AND CLOSING OF SAID SHUTTER TO DEFINE EXPOSURE TIME, A TIME SWITCH IN SAID TIMING DEVICE, A LIGHT SOURCE, A LIGHT-SENSITIVE ELEMENT, TWO ADJUSTABLE LIGHT-WEAKENING DEVICES, A SERVO-MECHANISM COUPLED TO AT LEAST ONE OF SAID LIGHT WEAKENING DEVICES FOR ADJUSTMENT THEREOF, CAMERA MEANS FOR SUPPORTING A PHOTO-SENSITIVE MEDIUM IN FIXED RELATION TO AN OPTICAL PATH THROUGH THE APPARATUS, AN OBJECTIVE ARRANGED IN SAID PATH TO FORM AN IMAGE ON SAID MEDIUM, AND OPTICAL MEANS ARRANGED TO DIVERT A PROPORTION OF LIGHT IN SAID PATH AWAY FROM SAID CAMERA MEANS TOWARDS SAID LIGHT-SENSITIVE ELEMENT, ONE OF SAID LIGHT-WEAKENING DEVICES BEING PLACED IN THE OPTICAL PATH BETWEEN SAID LIGHT SOURCE AND SAID OPTICAL MEANS, THE OTHER OF SAID LIGHT-WEAKENING DEVICES BEING PLACED IN THE PATH OF LIGHT PASSING BETWEEN SAID OPTICAL MEANS AND SAID LIGHT-SENSITIVE ELEMENT AND SO COUPLED TO THE TIME SWITCH THAT AT ANY INSTANT THE TIME SET THEREON IS DIRECTLY PROPORTIONAL TO THE LIGHT TRANSMISSION FACTOR OF SAID OTHER LIGHT-WEAKENING DEVICE, AND THE SERVO-MECHA-
Claim 2
Dependent Claim
182 words
A PHOTOMICROGRAPHIC APPARATUS COMPRISING IN COMBINATION, AN ELECTROMAGNETIC SHUTTER, AN ELECTRIC TIMING DEVICE ARRANGED TO CONTROL OPENING AND CLOSING OF SAID SHUTTER TO DEFINE EXPOSURE TIME, A TIME SWITCH IN SAID TIMING DEVICE, A LIGHT SOURCE, A LIGHT-SENSITIVE ELEMENT, TWO ADJUSTABLE LIGHT-WEAKENING DEVICES, A SERVO-MECHANISM COUPLED TO AT LEAST ONE OF SAID LIGHT WEAKENING DEVICES FOR ADJUSTMENT THEREOF, CAMERA MEANS FOR SUPPORTING A PHOTO-SENSITIVE MEDIUM IN FIXED RELATION TO AN OPTICAL PATH THROUGH THE APPARATUS, AN OBJECTIVE ARRANGED IN SAID PATH TO FORM AN IMAGE ON SAID MEDIUM, AND OPTICAL MEANS ARRANGED TO DIVERT A PROPORTION OF LIGHT IN SAID PATH AWAY FROM SAID CAMERA MEANS TOWARDS SAID LIGHT-SENSITIVE ELEMENT, ONE OF SAID LIGHT-WEAKENING DEVICES BEING PLACED IN THE OPTICAL PATH BETWEEN SAID LIGHT SOURCE AND SAID OPTICAL MEANS, THE OTHER OF SAID LIGHT-WEAKENING DEVICES BEING PLACED IN THE PATH OF LIGHT PASSING BETWEEN SAID OPTICAL MEANS AND SAID LIGHT-SENSITIVE ELEMENT AND SO COUPLED TO THE TIME SWITCH THAT AT ANY INSTANT THE TIME SET THEREON IS DIRECTLY PROPORTIONAL TO THE LIGHT TRANSMISSION FACTOR OF SAID OTHER LIGHT-WEAKENING DEVICE, AND THE SERVO-MECHA-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |