Patent US1799387A successfully refreshed from Google Patents.
US2822720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of image reproduction and control
Assignee: Individual
•
Filing: 1951-08-01
•
Granted: 1958-02-11
•
Expires: 1971-08-01
Abstract
No abstract record available.
Inventors
- 👤 Douglas Newhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:19
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/08; G03B15/10; H; H04; H04N; H04N23/00; H04N23/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR341508A
Cited
US1779853A
Cited
US1602499A
Cited
US1869819A
Cited
US1971828A
Cited
US1939074A
Cited
US2014435A
Cited
US2073370A
Cited
US2030300A
Cited
US2051526A
Cited
US2150543A
Cited
US2123529A
Cited
DE653913C
Cited
US2293207A
Cited
US2273876A
Cited
US2392142A
Cited
US2475245A
Cited
US2525891A
Cited
US2520943A
Cited
US2648252A
Cited
US2687668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |