US3547533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfilm reproduction machine
Assignee: Xerox Corp
•
Filing: 1965-11-04
•
Granted: 1970-12-15
•
Expires: 1985-11-04
Abstract
No abstract record available.
Inventors
- 👤 David R Stokes
- 👤 Gilbert A Aser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:55
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; H; H10; H10N; H10N80/00; G03G15/041
Claims Analysis
Total Claims: 0
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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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |