US1972230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finned tube
Assignee: YORK ICE MACHINERY Corp
•
Filing: 1933-02-17
•
Granted: 1934-09-04
•
Expires: 1953-02-17
Abstract
No abstract record available.
Inventors
- 👤 Edward G Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36
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) | 1937-09-03 | 1938-03-05 | 1938-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-09-03 | 1942-03-05 | 1942-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-09-03 | 1946-03-05 | 1946-09-04 | $7700.00 | Window Closed / Lapsed |