US2819928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for simultaneously discharging materials
Assignee: Atlas Copco AB
•
Filing: 1954-05-18
•
Granted: 1958-01-14
•
Expires: 1974-05-18
Abstract
No abstract record available.
Inventors
- 👤 Liedberg Kurt Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:00
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/14; B05B12/1418; B05B7/00; B05B7/24; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1051171A
Cited
US2335116A
Cited
US2365234A
Cited
US2511626A
Cited
US2463736A
Cited
US2536400A
Cited
US2675946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |