Patent US1729320A successfully refreshed from Google Patents.
US1729320A
Expired / Lapsed
US
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Instrument for measuring electric currents
Assignee: Individual
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Filing: 1927-09-02
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Granted: 1929-09-24
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Expires: 1947-09-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:33
CPC Classifications
G; G01; G01G; G01G1/00; G01G1/18; G01G1/26; G01G1/30; 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) | 1932-09-23 | 1933-03-25 | 1933-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-09-23 | 1937-03-25 | 1937-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-09-23 | 1941-03-25 | 1941-09-24 | $7700.00 | Window Closed / Lapsed |