Patent US3449546A successfully refreshed from Google Patents.
US3449546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infra-red heater
Assignee: Xerox Corp
•
Filing: 1966-06-23
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Granted: 1969-06-10
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Expires: 1986-06-23
Abstract
No abstract record available.
Inventors
- 👤 Prafulla S Dhoble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:23
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/44; G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2007; H05B3/0033; H05B3/0038; H05B3/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2535268A
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US2658984A
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US2807703A
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US2891136A
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US3223875A
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US3197614A
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US3225247A
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US3307017A
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US3325629A
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US3346723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |