US1524587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring system
Assignee: Westinghouse Electric Corp
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Filing: 1921-11-29
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Granted: 1925-01-27
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Expires: 1941-11-29
Abstract
No abstract record available.
Inventors
- 👤 Harry P Sparkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; G01R17/06; G01R17/08
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) | 1928-01-27 | 1928-07-28 | 1929-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-01-27 | 1932-07-28 | 1933-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-01-27 | 1936-07-28 | 1937-01-27 | $7700.00 | Window Closed / Lapsed |