US1473842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural element
Assignee: Westinghouse Electric Corp
•
Filing: 1918-07-10
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Granted: 1923-11-13
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Expires: 1938-07-10
Abstract
No abstract record available.
Inventors
- 👤 Louis T Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/28
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) | 1926-11-12 | 1927-05-14 | 1927-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-11-12 | 1931-05-14 | 1931-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-11-12 | 1935-05-14 | 1935-11-13 | $7700.00 | Window Closed / Lapsed |