Patent US2749464A successfully refreshed from Google Patents.
US2749464A
Expired / Lapsed
US
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Adjustable magnetic electronic lens
Assignee: Hartford National Bank and Trust Co
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Filing: 1953-08-04
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Granted: 1956-06-05
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Expires: 1973-08-04
Abstract
No abstract record available.
Inventors
- 👤 Poole Jan Bart Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:00
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/10; H01J37/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB472165A
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US2219193A
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US2295403A
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US2369782A
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US2624022A
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US2418349A
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US2469165A
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US2646522A
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US2567674A
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US2594099A
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US2679018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |