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US2934648A
Expired / Lapsed
US
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Apparatus for the electric charging by means of radioactive preparations of matter suspended in a gas stream
Assignee: Messen-Jaschin GA
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Filing: 1955-04-25
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Granted: 1960-04-26
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Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 Leupi Robert
- 👤 Schedling Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/40; B03C3/41; B03C3/43; B03C3/38; B03C3/383
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |