US3516210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire and smoke relief ventilator sky-light dome
Assignee: Wasco Products Inc
•
Filing: 1968-11-19
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Granted: 1970-06-23
•
Expires: 1988-11-19
Abstract
No abstract record available.
Inventors
- 👤 Arthur Philip Jentoft
- 👤 Paul Archille Couture
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:04
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/02; E; E04; E04D; E04D13/00; E04D13/03; E04D13/035; E04D13/0351; E04D13/0354; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/123; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/148; E05Y2900/152; E05Y2900/154; F24F11/00; F24F11/30; F24F11/32; F24F11/33; F24F11/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3017721A
Cited
US2984517A
Cited
US3067453A
Cited
US3078001A
Cited
US3153255A
Cited
US3182581A
Cited
US3350819A
Cited
US3399500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |