US3528863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-coated electrical steel sheet
Assignee: Westinghouse Electric Corp
•
Filing: 1966-09-02
•
Granted: 1970-09-15
•
Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Karl Foster
- 👤 Joseph Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:56
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0213; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/076; C03C3/097; C03C3/12; C03C3/16; C03C3/21; C03C4/00; C23; C23D; C23D11/00; C23D5/00; C23D5/02; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14766; H01F1/14775; H01F1/14783; H01F27/00; H01F27/24; H01F27/245; H01F27/2455
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2385332A
Cited
US2394047A
Cited
US2492682A
Cited
US2920296A
Cited
US3084081A
Cited
US3200310A
Cited
US3088835A
Cited
US3138492A
Cited
US3207636A
Cited
US3418710A
Cited
US3407091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |