Patent US921046A successfully refreshed from Google Patents.
US921046A
Expired / Lapsed
US
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Circuit-interrupter.
Assignee: Connecticut Telephone & Electric Co
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Filing: 1908-06-16
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Granted: 1909-05-11
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Expires: 1928-06-16
Abstract
No abstract record available.
Inventors
- 👤 James M Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:30
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/38
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) | 1912-05-10 | 1912-11-09 | 1913-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-10 | 1916-11-09 | 1917-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-10 | 1920-11-09 | 1921-05-11 | $7700.00 | Window Closed / Lapsed |