US2936693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioners
Assignee: Hupp Corp
•
Filing: 1956-12-14
•
Granted: 1960-05-17
•
Expires: 1976-12-14
Abstract
No abstract record available.
Inventors
- 👤 James M Sweedyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:12
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/02; F24F13/06; F24F13/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1597588A
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US1749778A
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US2065328A
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US2067575A
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US2254258A
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US2227360A
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US2249772A
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US2372897A
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US2472792A
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US2467309A
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US2472748A
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US2711087A
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US2786407A
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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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |