US2844734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for producing plural photographic exposures
Assignee: Individual
•
Filing: 1956-04-05
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Granted: 1958-07-22
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Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Hartmann Josef-Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:48
CPC Classifications
G; G21; G21K; G21K4/00; Y; Y10; Y10S; Y10S430/00; Y10S430/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ARRANGEMENT FOR PRODUCING IN A SINGLE ILLUMINATION OPERATION, WITH PENETRATING RAYS EMANATING FROM A SUITABLE SOURCE, A PLURALITY OF PHOTOGRAPHIC EXPOSURES, COMPRISING A PLURALITY OF SUCCESSIVELY DISPOSED LIGHT SENSITIVE LAYERS, A PLURALITY OF AMPLIFICATION FOILS EACH CONTAINING FLUORESCENT SUBSTANCE, EACH LIGHT SENSITIVE LAYER BEING RESPECTIVELY IN ENGAGEMENT WITH A SEPARATE AMPLIFICATION FOIL FOR OAMPLIFYING THE EXPOSURE ILLUMINATION OF THE CORRESPONDING LIGHT SENSITIVE LAYER, AT LEAST THOSE OF SAID AMPLIFICATION FOILS LYING NEAREST TO SAID RAY SOURCE
Claim 2
Dependent Claim
77 words
AN ARRANGEMENT FOR PRODUCING IN A SINGLE ILLUMINATION OPERATION, WITH PENETRATING RAYS EMANATING FROM A SUITABLE SOURCE, A PLURALITY OF PHOTOGRAPHIC EXPOSURES, COMPRISING A PLURALITY OF SUCCESSIVELY DISPOSED LIGHT SENSITIVE LAYERS, A PLURALITY OF AMPLIFICATION FOILS EACH CONTAINING FLUORESCENT SUBSTANCE, EACH LIGHT SENSITIVE LAYER BEING RESPECTIVELY IN ENGAGEMENT WITH A SEPARATE AMPLIFICATION FOIL FOR OAMPLIFYING THE EXPOSURE ILLUMINATION OF THE CORRESPONDING LIGHT SENSITIVE LAYER, AT LEAST THOSE OF SAID AMPLIFICATION FOILS LYING NEAREST TO SAID RAY SOURCE
References Cited (Backward Citations)
US2807725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |