US3513766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating hood
Assignee: AHLRICH ALBERT G FORTY-FIVE PERCENT (45%) OF FULL AND UNDIVIDED RIGHT
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Filing: 1968-06-24
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Granted: 1970-05-26
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Expires: 1988-06-24
Abstract
No abstract record available.
Inventors
- 👤 Willard K Ahlrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:39
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; B; B08; B08B; B08B2215/00; B08B2215/003; F24F; F24F13/00; F24F13/02; F24F13/06; F24F2013/0616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |