US2511490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air diffuser
Assignee: Individual
•
Filing: 1947-04-02
•
Granted: 1950-06-13
•
Expires: 1967-04-02
Abstract
No abstract record available.
Inventors
- 👤 Lawrence H Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:12
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)
US964146A
Cited
US1601815A
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US1861812A
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US2034231A
Cited
US2191224A
Cited
US2160883A
Cited
US2182690A
Cited
US2222081A
Cited
US2282572A
Cited
US2229388A
Cited
US2285984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |