Patent US977523A successfully refreshed from Google Patents.
US977523A
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Automatic balancing device.
Assignee: Individual
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Filing: 1909-07-28
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Granted: 1910-12-06
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Expires: 1929-07-28
Abstract
No abstract record available.
Inventors
- 👤 Victor G Gustafson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:36
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/0036; G; G01; G01C; G01C5/00
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) | 1913-12-05 | 1914-06-06 | 1914-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-12-05 | 1918-06-06 | 1918-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-12-05 | 1922-06-06 | 1922-12-06 | $7700.00 | Window Closed / Lapsed |