Patent US2617348A successfully refreshed from Google Patents.
US2617348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating unit
Assignee: O A SUTTON Corp Inc
•
Filing: 1949-12-02
•
Granted: 1952-11-11
•
Expires: 1969-12-02
Abstract
No abstract record available.
Inventors
- 👤 Ottis A Sutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/007; F24F7/013
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1011799A
Cited
US1769922A
Cited
US2153576A
Cited
US2123448A
Cited
US2203491A
Cited
US2330907A
Cited
US2285161A
Cited
US2378012A
Cited
US2418760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |