Patent US2641846A successfully refreshed from Google Patents.
US2641846A
Expired / Lapsed
US
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Wall alignment apparatus
Assignee: Individual
•
Filing: 1950-02-14
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Granted: 1953-06-16
•
Expires: 1970-02-14
Abstract
No abstract record available.
Inventors
- 👤 Zeno Manuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:50
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/18; E04G21/1841
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US71791A
Cited
DE505276C
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US795196A
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US878674A
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US1414755A
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US1519637A
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GB233453A
Cited
US1545883A
Cited
US1905626A
Cited
GB583235A
Cited
US2430179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |