Patent US3233380A successfully refreshed from Google Patents.
US3233380A
Expired / Lapsed
US
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Wall structure and block therefor
Assignee: Individual
•
Filing: 1962-03-09
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Granted: 1966-02-08
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Morton M Rosenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:26
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/04; E04B2/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE73938C
Cited
US716029A
Cited
FR465102A
Cited
FR20353E
Cited
FR495990A
Cited
US1377718A
Cited
US1421278A
Cited
US1957820A
Cited
US2116946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |