Patent US3438219A successfully refreshed from Google Patents.
US3438219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room air conditioner
Assignee: Old Carco LLC
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Filing: 1967-08-14
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Granted: 1969-04-15
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Expires: 1987-08-14
Abstract
No abstract record available.
Inventors
- 👤 Richard L Brugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:49
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/20; F24F1/00; F24F1/02; F24F1/029; F24F1/03; F24F1/031; F24F1/032; F24F1/0323; F24F1/0328
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2708833A
Cited
US2760354A
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US2712737A
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US2756569A
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US3045448A
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US3176474A
Cited
US3271972A
Cited
US3296820A
Cited
US3309889A
Cited
US3372557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |