US1224210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer-core punching.
Assignee: Westinghouse Electric Corp
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Filing: 1913-12-26
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Granted: 1917-05-01
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Expires: 1933-12-26
Abstract
No abstract record available.
Inventors
- 👤 Emerson G Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:16
CPC Classifications
H; H01; H01F; H01F17/00; H01F17/04; E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-04-30 | 1920-10-30 | 1921-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-04-30 | 1924-10-30 | 1925-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-04-30 | 1928-10-30 | 1929-05-01 | $7700.00 | Window Closed / Lapsed |