Patent US2954140A successfully refreshed from Google Patents.
US2954140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic shielding
Assignee: Raytheon Co
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Filing: 1958-01-29
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Granted: 1960-09-27
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Expires: 1978-01-29
Abstract
No abstract record available.
Inventors
- 👤 Norman V Sutherland
- 👤 William D Maitland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:22
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/68; B65D2585/00; B65D2585/68; B65D2585/6802; B65D2585/6875
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1721427A
Cited
US1988843A
Cited
US1913649A
Cited
US2388848A
Cited
US2516124A
Cited
GB647603A
Cited
US2846959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |