US2800068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating, ventilating, and windshield defrosting apparatus
Assignee: Motors Liquidation Co
•
Filing: 1952-11-06
•
Granted: 1957-07-23
•
Expires: 1972-11-06
Abstract
No abstract record available.
Inventors
- 👤 Charles F Arnold
- 👤 John R Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007; B60H1/00021; B60H1/00035; B60H1/00042; B60H2001/00185; B60H2001/002; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348697A
Cited
US2009311A
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US2612829A
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US2580026A
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US2634670A
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US2640407A
Cited
US2631517A
Cited
US2605688A
Cited
US2718839A
Cited
US2627218A
Cited
US2672294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |