Patent US3092727A successfully refreshed from Google Patents.
US3092727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the simultaneous observation of an incandescent spot and a relatively cool surrounding area
Assignee: Carl Zeiss AG
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Filing: 1961-02-06
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Granted: 1963-06-04
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Expires: 1981-02-06
Abstract
No abstract record available.
Inventors
- 👤 Leinhos Roland
- 👤 Koch Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:20
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/30; H01J37/3002; H01J37/3005; B; B23; B23K; B23K15/00; B23K15/0013; G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024; G02B27/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
APPARATUS FOR SIMULTANEOUS OBSERVATION OF AN INCANDESCENT SPOT AND ITS SURROUNDINGS, COMPRISING A SOURCE OF LIGHT OF SHORT WAVELENGTH, SAID WAVE LENGTH BEING SHORTER THAN THE WAVE LENGTHS OF THE PRINCIPAL EMISSION FROM SAID INCANDESCENT SPOT, MEANS TO FOCUS SAID LIGHT ON THE AREA UNDER OBSERVATION, SAID AREA INCLUDING SAID INCANDESCENT SPOT, AND MEANS FOR OBSERVING SAID ILLUMINATED AREA, SAID OBSERVATION MEANS INCLUDING A FILTER PASSING ONLY LIGHT OF SAID SHORT WAVELENGTH, SAID FILTER BEING PLACED IN THE PATH OF THE OBSERVATION RAYS.
Claim 2
Dependent Claim
83 words
APPARATUS FOR SIMULTANEOUS OBSERVATION OF AN INCANDESCENT SPOT AND ITS SURROUNDINGS, COMPRISING A SOURCE OF LIGHT OF SHORT WAVELENGTH, SAID WAVE LENGTH BEING SHORTER THAN THE WAVE LENGTHS OF THE PRINCIPAL EMISSION FROM SAID INCANDESCENT SPOT, MEANS TO FOCUS SAID LIGHT ON THE AREA UNDER OBSERVATION, SAID AREA INCLUDING SAID INCANDESCENT SPOT, AND MEANS FOR OBSERVING SAID ILLUMINATED AREA, SAID OBSERVATION MEANS INCLUDING A FILTER PASSING ONLY LIGHT OF SAID SHORT WAVELENGTH, SAID FILTER BEING PLACED IN THE PATH OF THE OBSERVATION RAYS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |