US2964304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically adjusted orifice plate blast furnace gas cleaner and backpressure system
Assignee: Beazer East Inc
•
Filing: 1958-10-08
•
Granted: 1960-12-13
•
Expires: 1978-10-08
Abstract
No abstract record available.
Inventors
- 👤 Owen R Rice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:26
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; C; C21; C21B; C21B7/00; C21B7/007; Y; Y10; Y10S; Y10S261/00; Y10S261/54; Y10S55/00; Y10S55/34; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/776
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |