Patent US916284A successfully refreshed from Google Patents.
US916284A
Expired / Lapsed
US
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Electric signal-bell.
Assignee: P R Manufacturing Co
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Filing: 1908-01-09
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Granted: 1909-03-23
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Expires: 1928-01-09
Abstract
No abstract record available.
Inventors
- 👤 Harold W Eden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:31
CPC Classifications
G; G10; G10K; G10K1/00; G10K1/06; G10K1/062; G10K1/063; G10K1/064
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) | 1912-03-22 | 1912-09-21 | 1913-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-03-22 | 1916-09-21 | 1917-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-03-22 | 1920-09-21 | 1921-03-23 | $7700.00 | Window Closed / Lapsed |