US3426512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilation device for producing laminar flow
Assignee: ALEXANDER G NESHER
•
Filing: 1967-06-28
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Granted: 1969-02-11
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Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 Alexander G Nesher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/003; F24F1/00; F24F1/0007; F24F1/0071; F24F13/00; F24F13/02; F24F13/06; F24F13/068; F24F8/00; F24F8/10; F24F8/108
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US832247A
Cited
US2291220A
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US2251660A
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US2395233A
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US3318076A
Cited
US3303771A
Cited
US3356006A
Cited
US3363532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |