US3179034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air duct outlet grille and method of assembling the same
Assignee: Grinnell Corp
•
Filing: 1963-02-08
•
Granted: 1965-04-20
•
Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 Mitchell S Fain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:29
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1815388A
Cited
US2139611A
Cited
US2630053A
Cited
US2811093A
Cited
US3086442A
Cited
US3115082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |