US2472748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air register
Assignee: Trane Co
•
Filing: 1946-03-08
•
Granted: 1949-06-07
•
Expires: 1966-03-08
Abstract
No abstract record available.
Inventors
- 👤 Otto A Labus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:02
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2271134A
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US2310453A
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US2262261A
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US2282572A
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US2228201A
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US2315667A
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US2372790A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |