US2938714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hooded exhaust system
Assignee: Wolverine Corp
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Filing: 1958-10-17
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Granted: 1960-05-31
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Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
- 👤 Grenville B Gerrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:06
CPC Classifications
B; B08; B08B; B08B15/00; B08B15/02; F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74
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) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |