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US759807A
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US
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Tension device for key-levers of type-writers.
Assignee: UNION TYPEWRITER CO
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Filing: 1900-11-24
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Granted: 1904-05-10
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Expires: 1920-11-24
Abstract
No abstract record available.
Inventors
- 👤 Byron A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:47
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/02
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) | 1907-05-10 | 1907-11-09 | 1908-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-05-10 | 1911-11-09 | 1912-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-05-10 | 1915-11-09 | 1916-05-10 | $7700.00 | Window Closed / Lapsed |