US2591686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Picture screen stand
Assignee: DA LITE SCREEN CO Inc
•
Filing: 1951-03-14
•
Granted: 1952-04-08
•
Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Mais Leo J Du
- 👤 Frank J Prokop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:09
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/14; F16B7/1481; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F16M11/105; F16M11/20; F16M11/24; F16M11/242; F16M11/245; F16M11/26; F16M11/28; F16M2200/00; F16M2200/02; F16M2200/025; F16M2200/028; Y; Y10; Y10T; Y10T292/00; Y10T292/45; Y10T292/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2370235A
Cited
US2386450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |