US2053173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shadow producing screen for luminous projections and other applications and process for its manufacture
Assignee: Individual
•
Filing: 1931-05-11
•
Granted: 1936-09-01
•
Expires: 1951-05-11
Abstract
No abstract record available.
Inventors
- 👤 Astima Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/62; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-09-01 | 1940-03-02 | 1940-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-01 | 1944-03-02 | 1944-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-01 | 1948-03-02 | 1948-09-01 | $7700.00 | Window Closed / Lapsed |