US3148277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for developing fingerprints with ultraviolet light
Assignee: Individual
•
Filing: 1962-04-12
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Granted: 1964-09-08
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Expires: 1982-04-12
Abstract
No abstract record available.
Inventors
- 👤 Morton C Lewanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:07
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/08; A; A61; A61B; A61B5/00; A61B5/117; A61B5/1171; A61B5/1172
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
APPARATUS FOR DEVELOPING AN IMAGE SUCH AS A FINGERPRINT ON A PIECE OF PAPER SUCH AS A CHECKK OR THE LIKE, WHICH HAS A HALIDE SALT DEPOSITED ON IT IN A PATTERN CORRESPONDING TO THE IMAGE, THE APPARATUS COMPRISING A FRAME HAVING AN OPENING THROUGH IT, MEANS FOR SUPPORTING THE PAPER ON ONE SIDE OF THE FRAME OVER THE OPENING, MEANS FOR SPRAYING A SILVER NITRATE SOLUTION FROM THE OTHER SIDE OF THE FRAME THROUGH THE OPENING AND AGAINST THE PORTION OF THE PAPER OVERLYING THE OPENING TO FORM SILVER HALIDE WITH THE HALIDE ON THE SPRAYED PORTION OF THE PAPER, AND MEANS FOR IRRADIATING THE SILVER HALIDE WITH ULTRAVIOLET LIGHT TO REDUCE THE SILVER ION ON THE SPRAYED PORTION TO FORM A VISIBLE IMAGE.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |