US2778458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-strut or multi-cell panels
Assignee: Individual
•
Filing: 1951-09-05
•
Granted: 1957-01-22
•
Expires: 1971-09-05
Abstract
No abstract record available.
Inventors
- 👤 Briggs Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:10
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; E04C2002/3444; E04C2002/345; E04C2002/3455; E04C2002/3472; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879; Y10T428/00; Y10T428/24; Y10T428/24174; Y10T428/24182; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1247250A
Cited
FR25290E
Cited
US1625061A
Cited
US2108795A
Cited
US2333343A
Cited
US2220596A
Cited
GB554933A
Cited
US2373218A
Cited
US2508466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |