Patent US3377621A successfully refreshed from Google Patents.
US3613326A
Expired / Lapsed
US
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Preformed simulated brick panel having stepped edges
Assignee: United States Steel Corp
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Filing: 1969-10-03
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Granted: 1971-10-19
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Expires: 1989-10-03
Abstract
Abstract A PERFORMED PANEL SIMULATING BRICK OR OTHER STONE MATERIAL LAID IN SUCCESSIVE COURSES AND BEING CHARACTERIZED BY THE PRESENCE OF STEPPED LONGITUDINAL EDGES THAT ARE FORMED FOR TONGUE AND GROOVE ALIGNED ENGAGEMENT SO AS TO MINIMIZE THE PRESENCE OF VERTICAL JOINTS UPON INSTALLATION.
Inventors
- 👤 Robert E Mollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0871; E04F13/0875
Claims Analysis
Total Claims: 0
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |