Patent US2934808A successfully refreshed from Google Patents.
US2934808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing building blocks
Assignee: Individual
•
Filing: 1956-05-09
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Granted: 1960-05-03
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Expires: 1976-05-09
Abstract
No abstract record available.
Inventors
- 👤 Howe E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:44
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/04; B28B11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US355876A
Cited
US658791A
Cited
US707921A
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US1196327A
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US1165809A
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US1265138A
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US1342192A
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US1406856A
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US1691899A
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US1453746A
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US1814172A
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US1694579A
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US2038801A
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US2214191A
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US2320728A
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US2390564A
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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) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |