US2421247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motion reproducing system
Assignee: Arma Corp
•
Filing: 1935-12-10
•
Granted: 1947-05-27
•
Expires: 1955-12-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:51
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/644; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731776A
Cited
GB191020373A
Cited
US1684138A
Cited
US1684137A
Cited
US1798592A
Cited
US1924688A
Cited
GB350955A
Cited
US2056348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-26 | 1950-11-25 | 1951-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-26 | 1954-11-25 | 1955-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-26 | 1958-11-25 | 1959-05-27 | $7700.00 | Window Closed / Lapsed |