Patent US2594543A successfully refreshed from Google Patents.
US2594543A
Expired / Lapsed
US
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Adjustable plumber's level
Assignee: Individual
•
Filing: 1949-08-06
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Granted: 1952-04-29
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Expires: 1969-08-06
Abstract
No abstract record available.
Inventors
- 👤 Charles B Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:16
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US621358A
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US662991A
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US1126548A
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US1187548A
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US1210370A
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US1221644A
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US1683065A
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US2162602A
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US2536788A
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US2521525A
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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) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |