Patent US4226900A successfully refreshed from Google Patents.
Patent US1652845A successfully refreshed from Google Patents.
US1652845A
Expired / Lapsed
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Soot-blowing system
Assignee: EDGE MOOR IRON Co
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Filing: 1924-10-13
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Granted: 1927-12-13
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Expires: 1944-10-13
Abstract
No abstract record available.
Inventors
- 👤 Vennum George Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:02
CPC Classifications
F; F28; F28G; F28G1/00; F28G1/16; F28G1/166; Y; Y10; Y10S; Y10S239/00; Y10S239/13; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86911; Y10T137/87169; Y10T137/87193
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) | 1930-12-12 | 1931-06-13 | 1931-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-12 | 1935-06-13 | 1935-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-12 | 1939-06-13 | 1939-12-13 | $7700.00 | Window Closed / Lapsed |