US3028786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum frame for use in making color separations
Assignee: Robertson Photo-Mechanix Inc
•
Filing: 1959-02-04
•
Granted: 1962-04-10
•
Expires: 1979-02-04
Abstract
No abstract record available.
Inventors
- 👤 Wanielista Walter
- 👤 Keller Daniel Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:05
CPC Classifications
G; G03; G03F; G03F9/00; Y; Y10; Y10S; Y10S101/00; Y10S101/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2317348A
Cited
US2741963A
Cited
US2799204A
Cited
US2814975A
Cited
US2814233A
Cited
US2952185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |