US2131437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Admiralty condenser tube
Assignee: American Brass Co
•
Filing: 1936-04-13
•
Granted: 1938-09-27
•
Expires: 1956-04-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Jennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:08
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/085; C; C22; C22C; C22C9/00; C22C9/04
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) | 1941-09-26 | 1942-03-28 | 1942-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-26 | 1946-03-28 | 1946-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-26 | 1950-03-28 | 1950-09-27 | $7700.00 | Window Closed / Lapsed |