US3219143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic curb for building-roof air exhauster
Assignee: Acme Engineering and Manufacturing Corp
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Filing: 1965-02-10
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Granted: 1965-11-23
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Expires: 1985-02-10
Abstract
No abstract record available.
Inventors
- 👤 Hoy R Bohanon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:06
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/24; E; E04; E04H; E04H3/00; F24F7/00; F24F7/02; F24F7/025; Y; Y10; Y10T; Y10T403/00; Y10T403/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
AN AIR EXHAUSTER FOR A BUILDING HAVING A ROOF WITH VENTILATING OPENING THEREIN, COMPRISING IN COMBINATION: A BODY PORTION HAVING A BASE AND TOP WALL CONNECTED BY A SIDE WALL, SAID BASE WALL CONTAINING AN INLET FOR AIR LOCATED IN JUXTAPOSITION WITH RESPECT TO SAID VENTILATING OPENING OF SAID ROOF WHILE SAID TOP WALL CONTAINS AN OUTLET FOR AIR BEING EXHAUSTED FROM SAID BODY PORTION; A FRAME ASSEMBLY LOCATED WITHIN SAID BODY PORTION, SAID FRAME ASSEMBLY INCLUDING A PLURALITY OF UPPER AND LOWER SUPPORTS SPACED APART FROM EACH OTHER SHORT HORIZONTAL DISTANCES ALONG SAID
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |