US3308805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and air conditioning apparatus
Assignee: Individual
•
Filing: 1963-06-03
•
Granted: 1967-03-14
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Stockli Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
F; F24; F24H; F24H6/00; F24C; F24C13/00; F24F; F24F3/00; F24F3/044; F24F3/12; F24F3/14; F24F3/153; F24H1/00; F24H1/46; F24H1/48; F24H2230/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348463A
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US2524160A
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US1240388A
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US1424958A
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US2023602A
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US2388210A
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US2891519A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |