US3050958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Through-piping arrangement for air conditioning unit
Assignee: American Air Filter Co Inc
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Filing: 1961-04-12
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Granted: 1962-08-28
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Expires: 1981-04-12
Abstract
No abstract record available.
Inventors
- 👤 Richard E Allender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:14
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/81; F24F1/00; F24F1/0007; F24F1/0035; F24F1/0043; F24F1/005; F24F1/0059; F24F1/0063; F24F1/0068; F24F1/0071; F24F1/0073
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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |