Patent US2477947A successfully refreshed from Google Patents.
US2477947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for projecting powders carrying electrostatic charges
Assignee: ELECTRONIC DUSTING CORP
•
Filing: 1945-08-24
•
Granted: 1949-08-02
•
Expires: 1965-08-24
Abstract
No abstract record available.
Inventors
- 👤 Yadoff Oleg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:35
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/025; B05B5/03; B05B5/032; Y; Y10; Y10S; Y10S47/00; Y10S47/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US563829A
Cited
US825381A
Cited
US817819A
Cited
US1723955A
Cited
US1749504A
Cited
US2297726A
Cited
US2302289A
Cited
US2302185A
Cited
US2396533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |