US2961632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal structure for electrical heating unit
Assignee: IND ENGINEERING AND EQUIPMENT
•
Filing: 1956-06-28
•
Granted: 1960-11-22
•
Expires: 1976-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Hachmeister
- 👤 Epstein Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:40
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE373452C
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US1857614A
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US2369045A
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US2383926A
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US2383823A
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US2456343A
Cited
US2563713A
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US2790153A
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US2788503A
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |