US2553044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for soot blowers
Assignee: —
•
Filing: —
•
Granted: 1951-05-15
•
Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:04
CPC Classifications
F; F28; F28G; F28G3/00; F28G3/16; F28G3/166; B; B08; B08B; B08B3/00; B08B3/02; B08B3/026; F28G1/00; F28G1/16; F28G1/166; F28G15/00; F28G15/003; F28G9/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8593; Y10T137/86389; Y10T137/86445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |