US2647033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark stylus recording apparatus
Assignee: General Electric Co
•
Filing: 1952-06-11
•
Granted: 1953-07-28
•
Expires: 1972-06-11
Abstract
No abstract record available.
Inventors
- 👤 Harold T Faus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:12
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/24; G; G01; G01D; G01D15/00; G01D15/06; G01D15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2404975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |