US2759092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heating unit and process of making the same
Assignee: Individual
•
Filing: 1953-09-25
•
Granted: 1956-08-14
•
Expires: 1973-09-25
Abstract
No abstract record available.
Inventors
- 👤 Fortin Paul Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:41
CPC Classifications
H; H05; H05B; H05B3/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083; Y10T29/49117; Y10T29/49174; Y10T29/49826; Y10T29/49947; Y10T29/49948; Y10T29/4995; Y10T29/49954; Y10T29/49956; Y10T29/49957; Y10T428/00; Y10T428/12; Y10T428/12444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1162363A
Cited
US1578326A
Cited
US2396099A
Cited
US2381218A
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US2375997A
Cited
US2433239A
Cited
US2559077A
Cited
US2522542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |