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US2688245A
Expired / Lapsed
US
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Interlocking composition building block
Assignee: Individual
•
Filing: 1949-02-08
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Granted: 1954-09-07
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Expires: 1969-02-08
Abstract
No abstract record available.
Inventors
- 👤 George A Vesper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:53
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/02; E04B2/14; E04B2/16; E04B2/18; E04B2002/0202; E04B2002/0204; E04B2002/0208; E04B2002/0215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US474285A
Cited
US1282090A
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USRE22913E
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FR496022A
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US1378735A
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US1545173A
Cited
US1897659A
Cited
US2019653A
Cited
US2201110A
Cited
US2124430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |