Patent US2678273A successfully refreshed from Google Patents.
US2678273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic light balancing method
Assignee: Warner Bros Entertainment Inc
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Filing: 1949-05-14
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Granted: 1954-05-11
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Expires: 1969-05-14
Abstract
No abstract record available.
Inventors
- 👤 James A Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF PHOTOGRAPHING AN AREA AT LEAST ONE PORTION OF WHICH HAS A NORMAL HIGH INTENSITY OF ILLUMINATION, AND ANOTHER PORTION OF WHICH HAS A NORMAL LOW INTENSITY OF ILLUMINATION COMPRISING ILLUMINATING SAID PORTION OF NORMAL LOW INTENSITY ILLUMINATION TO AN INTENSITY REQUIRED BY THE PHOTOGRAPHIC EMULSION OF ANY TYPE BEING USED FOR PHOTOGRAPHING, AND REDUCING THE
Claim 2
Independent Claim
58 words
THE METHOD OF PHOTOGRAPHING AN AREA AT LEAST ONE PORTION OF WHICH HAS A NORMAL HIGH INTENSITY OF ILLUMINATION, AND ANOTHER PORTION OF WHICH HAS A NORMAL LOW INTENSITY OF ILLUMINATION COMPRISING ILLUMINATING SAID PORTION OF NORMAL LOW INTENSITY ILLUMINATION TO AN INTENSITY REQUIRED BY THE PHOTOGRAPHIC EMULSION OF ANY TYPE BEING USED FOR PHOTOGRAPHING, AND REDUCING THE
References Cited (Backward Citations)
US1742680A
Cited
US1764490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |