US2746347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide rule magnifiers
Assignee: Individual
•
Filing: 1953-11-24
•
Granted: 1956-05-22
•
Expires: 1973-11-24
Abstract
No abstract record available.
Inventors
- 👤 Paul E Gaire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:13
CPC Classifications
G; G01; G01B; G01B9/00; G06; G06G; G06G1/00; G06G1/02; G06G1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US996039A
Cited
US1557605A
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US1782024A
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US1794419A
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US1884968A
Cited
US1900930A
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US2100239A
Cited
US2297232A
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US2649838A
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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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |