US2875312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating assembly and method of production thereof
Assignee: Thermel Inc
•
Filing: 1956-09-27
•
Granted: 1959-02-24
•
Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 William H Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:18
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/49936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2747070A
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US2722591A
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GB720939A
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US2777043A
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US2786125A
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US2802086A
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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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |