US2092402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recuperator tile structure
Assignee: AMCO Inc
•
Filing: 1934-08-07
•
Granted: 1937-09-07
•
Expires: 1954-08-07
Abstract
No abstract record available.
Inventors
- 👤 William A Morton
- 👤 Howard F Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:35
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/04; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/435
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1940-09-06 | 1941-03-08 | 1941-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-09-06 | 1945-03-08 | 1945-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-09-06 | 1949-03-08 | 1949-09-07 | $7700.00 | Window Closed / Lapsed |