US1799632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superheater
Assignee: Metropolitan Engineering Co
•
Filing: 1924-05-29
•
Granted: 1931-04-07
•
Expires: 1944-05-29
Abstract
No abstract record available.
Inventors
- 👤 Murray Joseph Bradley
- 👤 Jr Thomas E Murray
- 👤 John F Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:08
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/107; F22B37/108
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) | 1934-04-06 | 1934-10-06 | 1935-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-06 | 1938-10-06 | 1939-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-06 | 1942-10-06 | 1943-04-07 | $7700.00 | Window Closed / Lapsed |