Patent US2994162A successfully refreshed from Google Patents.
US2994162A
Expired / Lapsed
US
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Building block and wall construction made therefrom
Assignee: Individual
•
Filing: 1957-07-05
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Granted: 1961-08-01
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Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Frantz Markey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:35
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/14; E04B2/04; E04B2/06; E04B2/10; E04B2002/0202; E04B2002/0204; E04B2002/0206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US295692A
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US547159A
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US1282090A
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US763945A
Cited
US1077466A
Cited
GB249936A
Cited
US1691117A
Cited
FR650490A
Cited
US2106177A
Cited
US2210940A
Cited
US2558630A
Cited
US2634602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |