US2574368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generating apparatus
Assignee: Clayton Manufacturing Co
•
Filing: 1943-08-28
•
Granted: 1951-11-06
•
Expires: 1963-08-28
Abstract
No abstract record available.
Inventors
- 👤 Arant Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:41
CPC Classifications
F; F22; F22B; F22B35/00; F22B35/005; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579; Y10T137/8593; Y10T137/85978; Y10T137/86131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB255425A
Cited
US1939415A
Cited
US2054710A
Cited
US2259361A
Cited
US2227349A
Cited
US2306298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |