US2004270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stroboscopic apparatus and method
Assignee: VIBROSCOPE Inc
•
Filing: 1931-07-29
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Granted: 1935-06-11
•
Expires: 1951-07-29
Abstract
No abstract record available.
Inventors
- 👤 Davey Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:55
CPC Classifications
H; H05; H05B; H05B41/00; G; G01; G01P; G01P3/00; G01P3/36; G01P3/40
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) | 1938-06-10 | 1938-12-10 | 1939-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-10 | 1942-12-10 | 1943-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-10 | 1946-12-10 | 1947-06-11 | $7700.00 | Window Closed / Lapsed |