US2571382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection screen support
Assignee: Individual
•
Filing: 1945-09-29
•
Granted: 1951-10-16
•
Expires: 1965-09-29
Abstract
No abstract record available.
Inventors
- 👤 Albert L Raven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:47
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/58; F; F16; F16B; F16B5/00; F16B5/06; F16B5/0692; F16B7/00; F16B7/04; F16B7/044; F16B7/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249031A
Cited
US1099959A
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US1379064A
Cited
US1461441A
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US1844410A
Cited
US1983612A
Cited
US1965644A
Cited
US2357819A
Cited
US2350582A
Cited
US2408852A
Cited
US2403661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |