Patent US2555043A successfully refreshed from Google Patents.
US2555043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste heat or surplus heat boiler
Assignee: YORATH LEWIS BOILERS Ltd
•
Filing: 1945-08-17
•
Granted: 1951-05-29
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Lewis William Yorath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:57
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/18; F22B1/1869
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US232773A
Cited
US281946A
Cited
GB190900152A
Cited
US1839125A
Cited
US2008076A
Cited
US2358358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |