Patent US2845244A successfully refreshed from Google Patents.
US2845244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tripod
Assignee: DA LITE SCREEN Inc
•
Filing: 1954-07-30
•
Granted: 1958-07-29
•
Expires: 1974-07-30
Abstract
No abstract record available.
Inventors
- 👤 Frank J Prokop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:10
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F16M11/02; F16M11/16; F16M11/18; F16M11/242; F16M11/245
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1745845A
Cited
US1717908A
Cited
GB503098A
Cited
US2642247A
Cited
US2591244A
Cited
US2659559A
Cited
US2708559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |