US3557502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellar wall construction
Assignee: Individual
•
Filing: 1969-05-20
•
Granted: 1971-01-26
•
Expires: 1989-05-20
Abstract
Abstract A WALL OF A CELLAR IS FORMED FROM SHEET ALUMINUM SECTIONS WITH INTERLOCKING VERTICAL EDGE FOLDS RESTING AGAINST A FRAMEWORK OF COLUMNS AND JOISTS, RISING FROM A CONCRETE FOUNDATION, UNDER PRESSURE OF SOIL MATERIAL PILED UP OUTSIDE THE WALL.
Inventors
- 👤 Arthur Krebs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:35
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/02; E02D27/00; E04; E04B; E04B2/00; E04B2/56; E04B2/58; E04B2/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |