Patent US2931904A successfully refreshed from Google Patents.
US2931904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color radiographs, methods and articles
Assignee: Individual
•
Filing: 1953-12-28
•
Granted: 1960-04-05
•
Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Fine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:54
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB347152A
Cited
US1933652A
Cited
US1950033A
Cited
US1973886A
Cited
US2459528A
Cited
US2541599A
Cited
US2509766A
Cited
US2542304A
Cited
US2709223A
Cited
US2680199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |