US2877899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic collector and neutralizing element for engines and the like
Assignee: ERNEST J NEWHOUSE
•
Filing: 1955-04-04
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Granted: 1959-03-17
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Hugh A Hutchins
- 👤 Bruce C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:11
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/28; B03C1/286
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1752050A
Cited
US1831094A
Cited
US1932143A
Cited
US2436740A
Cited
US2507213A
Cited
US2698090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |