Patent US3431748A successfully refreshed from Google Patents.
US3431748A
Expired / Lapsed
US
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Door mounting for a room air conditioner discharge opening
Assignee: Carrier Corp
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Filing: 1967-09-15
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Granted: 1969-03-11
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Expires: 1987-09-15
Abstract
No abstract record available.
Inventors
- 👤 Theodore S Bolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:46
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075; F24F1/00; F24F1/02; F24F1/028; F24F1/0284; F24F11/00; F24F11/30; F24F11/41; F24F11/43; F24F13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3274919A
Cited
US3354809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |