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Patent US2541366A successfully refreshed from Google Patents.
US2541366A
Expired / Lapsed
US
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Spirit level attachment for tools
Assignee: Individual
•
Filing: 1946-11-15
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Granted: 1951-02-13
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Expires: 1966-11-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:56
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0078; B25H1/0085; G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US92927A
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US297719A
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US312266A
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US903011A
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US960718A
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US1063342A
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US1137892A
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US1255644A
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US1456431A
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US2379591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |