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Patent US2797491A successfully refreshed from Google Patents.
US2797491A
Expired / Lapsed
US
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Square attachment for providing a scriber or a height gauge
Assignee: Individual
•
Filing: 1954-12-10
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Granted: 1957-07-02
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Expires: 1974-12-10
Abstract
No abstract record available.
Inventors
- 👤 Asperger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:35
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/56; G01B3/566; G01B5/00; G01B5/02; G01B5/06; G01B5/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US579952A
Cited
US1179142A
Cited
US1380744A
Cited
US1404425A
Cited
US1509703A
Cited
US2345424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |