US919640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed-recorder and curve-drawing instrument.
Assignee: General Electric Co
•
Filing: 1901-07-29
•
Granted: 1909-04-27
•
Expires: 1921-07-29
Abstract
No abstract record available.
Inventors
- 👤 Lewis T Robinson
- 👤 Charles C Badeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:21
CPC Classifications
G; G01; G01R; G01R11/00; G01R11/56; G01R11/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1912-04-26 | 1912-10-26 | 1913-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-04-26 | 1916-10-26 | 1917-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-04-26 | 1920-10-26 | 1921-04-27 | $7700.00 | Window Closed / Lapsed |