US2740184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically charged material
Assignee: Individual
•
Filing: 1951-03-01
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Granted: 1956-04-03
•
Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Albert G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B03; B03C; B03C3/00; B03C3/28; B29; B29C; B29C71/00; B29C71/0081; D; D06; D06M; D06M10/00; D06M10/02; D06M10/025; D06M17/00; H; H01; H01G; H01G7/00; H01G7/02; H01G7/021; B01D2239/00; B01D2239/04; B01D2239/0407; B01D2239/0457; B01D2239/0471; B01D2239/0478; B01D2239/06; B01D2239/065; B01D2239/0654; B01D2239/0681; B01D2239/069; B01D2239/0695; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/08; D06M2101/16; D06M2101/18; D06M2101/20; D06M2101/26; D06M2200/00; Y; Y10; Y10S; Y10S99/00; Y10S99/14; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/3089; Y10T442/3106; Y10T442/3472; Y10T442/3504; Y10T442/3512; Y10T442/3976
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |