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US2887868A
Expired / Lapsed
US
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Wall structure and form unit therefor
Assignee: Individual
•
Filing: 1957-09-25
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Granted: 1959-05-26
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Expires: 1977-09-25
Abstract
No abstract record available.
Inventors
- 👤 Harold A Glidden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:34
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1543509A
Cited
US1693742A
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US1785067A
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US2050609A
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US2176213A
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GB515819A
Cited
US2476433A
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US2523920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |