US2759413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louvered panel structure
Assignee: Individual
•
Filing: 1952-12-17
•
Granted: 1956-08-21
•
Expires: 1972-12-17
Abstract
No abstract record available.
Inventors
- 👤 Lester L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:34
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; B; B21; B21D; B21D47/00; B21D47/04; F24F13/082
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US198979A
Cited
US834939A
Cited
US1613047A
Cited
US1792840A
Cited
US1797915A
Cited
US2242586A
Cited
US2395619A
Cited
US2509016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |