US1575165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for electrical precipitation
Assignee: Individual
•
Filing: 1924-06-04
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Granted: 1926-03-02
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Expires: 1944-06-04
Abstract
No abstract record available.
Inventors
- 👤 Hopkinson Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:47
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/743; B03C3/02; B03C3/04; B03C3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-03-01 | 1929-08-31 | 1930-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-01 | 1933-08-31 | 1934-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-01 | 1937-08-31 | 1938-03-02 | $7700.00 | Window Closed / Lapsed |