Patent US5007218B1 successfully refreshed from Google Patents.
US5007218B1
Expired / Lapsed
US
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Masonry block wall system and method
Assignee: Superlite Block
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Filing: 1986-10-14
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Granted: 1996-04-16
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Expires: 2006-10-14
Abstract
No abstract record available.
Inventors
- 👤 Fred G Bengtson
- 👤 Donald V Lopiccolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:28
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/02; E04B1/04; E04B1/06; E04B2/00; E04B2/02; E04B2002/0202; E04B2002/0243; E04B2002/0254; E04C; E04C3/00; E04C3/02; E04C2003/023
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) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |