US2919907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination heater and air conditioner unit
Assignee: Eaton Corp
•
Filing: 1955-02-21
•
Granted: 1960-01-05
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Homer C Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:16
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3227; B60H1/00007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2260900A
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US2232587A
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US2755072A
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US2780077A
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |