US2979158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic particle separating apparatus
Assignee: Gordon M Genge & Co Inc
•
Filing: 1958-10-17
•
Granted: 1961-04-11
•
Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Blaine H Vlier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE682588C
Cited
US2233639A
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US2443780A
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US2422564A
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US2476247A
Cited
US2650672A
Cited
US2672207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |