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US3530632A
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Precast masonry wall panel and method of precasting same
Assignee: MANGUM W SLOAN
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Filing: 1968-04-03
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Granted: 1970-09-29
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Expires: 1988-04-03
Abstract
No abstract record available.
Inventors
- 👤 Mangum W Sloan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:56
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/041; B; B28; B28B; B28B19/00; B28B19/0053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1796048A
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US947194A
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FR545541A
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US1833875A
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US2001162A
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US2300181A
Cited
GB572412A
Cited
US2470917A
Cited
US2688175A
Cited
US3204376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |