US2819495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making building blocks
Assignee: Individual
•
Filing: 1951-10-03
•
Granted: 1958-01-14
•
Expires: 1971-10-03
Abstract
No abstract record available.
Inventors
- 👤 Krausz Isidor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:39
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B11/00; B28B11/08; B28B11/0818; B28B7/0064; B28B7/0073; B28B7/0091; E; E04; E04B; E04B2/00; E04B2/02; E04B2/04; E04B2/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1795862A
Cited
US753491A
Cited
US442957A
Cited
US729887A
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US900910A
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US1411005A
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US1530447A
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US1635093A
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US1571849A
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US1750511A
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US1678613A
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US1658738A
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US1809504A
Cited
US1698120A
Cited
US1958184A
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GB363637A
Cited
US2017587A
Cited
US2162861A
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US2537684A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |