Patent US4197495A successfully refreshed from Google Patents.
Patent US2301467A successfully refreshed from Google Patents.
Patent US2552236A successfully refreshed from Google Patents.
US2552236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable air distributor
Assignee: Trane Co
•
Filing: 1946-10-19
•
Granted: 1951-05-08
•
Expires: 1966-10-19
Abstract
No abstract record available.
Inventors
- 👤 Reuben N Trane
- 👤 Albert O Tadewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:58
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US915178A
Cited
US1178088A
Cited
US1694214A
Cited
US1926778A
Cited
US2301045A
Cited
US2288307A
Cited
US2334866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |