Patent US2990911A successfully refreshed from Google Patents.
US2990911A
Expired / Lapsed
US
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Means to indicate shorting of precipitator by collected material
Assignee: Lanteris Space LLC
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Filing: 1957-09-12
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Granted: 1961-07-04
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Expires: 1977-09-12
Abstract
No abstract record available.
Inventors
- 👤 Holland S Lippincott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:05
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/32; F24F11/39; B; B03; B03C; B03C3/00; B03C3/34; B03C3/66; B03C3/68; F24F8/00; F24F8/10; F24F8/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2129783A
Cited
US2189614A
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US2579441A
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US2791725A
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US2738443A
Cited
US2798572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |