Patent US4695156A successfully refreshed from Google Patents.
US2551348A
Expired / Lapsed
US
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Electrical apparatus
Assignee: Lanteris Space LLC
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Filing: 1945-03-28
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Granted: 1951-05-01
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Expires: 1965-03-28
Abstract
No abstract record available.
Inventors
- 👤 David E Sunstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/045; H03K; H03K4/00; H03K5/00; H03K5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2102671A
Cited
US1964522A
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US2117698A
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US2131366A
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US2173427A
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US2173426A
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US2231792A
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US2272401A
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US2321269A
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US2347459A
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US2451950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |