Patent US2424481A successfully refreshed from Google Patents.
US1156491A
Expired / Lapsed
US
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Frequency-indicator.
Assignee: General Electric Co
•
Filing: 1912-07-13
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Granted: 1915-10-12
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Expires: 1932-07-13
Abstract
No abstract record available.
Inventors
- 👤 David R Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:12
CPC Classifications
G; G01; G01R; G01R23/00; G01R23/02
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) | 1918-10-11 | 1919-04-12 | 1919-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-10-11 | 1923-04-12 | 1923-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-10-11 | 1927-04-12 | 1927-10-12 | $7700.00 | Window Closed / Lapsed |