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US2741973A
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Outlet louver construction
Assignee: BAR BROOK Manufacturing CO Inc
•
Filing: 1951-11-23
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Granted: 1956-04-17
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Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 Murff H Swor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:32
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/082; Y; Y10; Y10S; Y10S55/00; Y10S55/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB201745A
Cited
GB341556A
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US2309717A
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US2382075A
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GB559091A
Cited
US2458134A
Cited
US2480562A
Cited
US2587509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |