US3528730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-image system
Assignee: Individual
•
Filing: 1967-10-02
•
Granted: 1970-09-15
•
Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Spencer David Saxon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:29
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/08; G03B27/00; G03B27/32; G03B27/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1424886A
Cited
DE599467C
Cited
GB191517393A
Cited
US1971486A
Cited
US2178228A
Cited
US2727428A
Cited
US2707903A
Cited
US3236150A
Cited
US2987961A
Cited
US3009391A
Cited
US3027807A
Cited
US3142223A
Cited
US3187629A
Cited
US3140341A
Cited
US3201797A
Cited
US3254207A
Cited
US3441343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |