US3132036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of developing latent fingerprints
Assignee: Individual
•
Filing: 1960-12-29
•
Granted: 1964-05-05
•
Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Macdonell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:28
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/117; A61B5/1171; A61B5/1172; A61B5/103; B; B05; B05D; B05D7/00; B05D7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A METHOD OF DEVELOPING A LATENT FINGERPRINT ON A SURFACE CONTAINING SAID LATENT FINGERPRINT WHICH COMPRISES APPLYING TO SAID SURFACE A LAYER OF OPAQUE MAGNETIZABLE POWDER AND PASSING A MAGNET ACROSS THE LAYER OF SAID POWDER TO REMOVE THE POWDER FROM THAT PORTION OF THE
Claim 2
Independent Claim
45 words
A METHOD OF DEVELOPING A LATENT FINGERPRINT ON A SURFACE CONTAINING SAID LATENT FINGERPRINT WHICH COMPRISES APPLYING TO SAID SURFACE A LAYER OF OPAQUE MAGNETIZABLE POWDER AND PASSING A MAGNET ACROSS THE LAYER OF SAID POWDER TO REMOVE THE POWDER FROM THAT PORTION OF THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |