Patent US939829A successfully refreshed from Google Patents.
US939829A
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US
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Insulating shaft-coupling.
Assignee: CHARLES BOND Co
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Filing: 1909-03-29
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Granted: 1909-11-09
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Expires: 1929-03-29
Abstract
No abstract record available.
Inventors
- 👤 John R Grundy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:34
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/64; F16D3/68; F16D3/72; F16D3/74; F16B; F16B2200/00; F16B2200/50; F16B2200/503; Y; Y10; Y10S; Y10S464/00; Y10S464/90
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) | 1912-11-08 | 1913-05-10 | 1913-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-11-08 | 1917-05-10 | 1917-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-11-08 | 1921-05-10 | 1921-11-09 | $7700.00 | Window Closed / Lapsed |