US2696715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic ventilating and cooling system
Assignee: Vapor Heating Corp
•
Filing: 1953-01-07
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Granted: 1954-12-14
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Expires: 1973-01-07
Abstract
No abstract record available.
Inventors
- 👤 Timothy J Lehane
- 👤 Hall Charles Edward Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:15
CPC Classifications
B; B61; B61D; B61D27/00; B61D27/0018; F; F24; F24F; F24F11/00; F24F11/30; F24F11/70; F24F11/72; F24F11/74; F24F11/75; F24F11/80; F24F11/81
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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |