US3468606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for contact printing film
Assignee: Extek Inc
•
Filing: 1968-01-08
•
Granted: 1969-09-23
•
Expires: 1988-01-08
Abstract
No abstract record available.
Inventors
- 👤 Margery S Wolf
- 👤 Robert Beispel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:04
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/24; G03B27/04; G03B27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2408310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |