Patent US4125659A successfully refreshed from Google Patents.
US2409672A
Expired / Lapsed
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Appliance for measuring the velocity of projectiles
Assignee: Individual
•
Filing: 1944-03-18
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Granted: 1946-10-22
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Expires: 1964-03-18
Abstract
No abstract record available.
Inventors
- 👤 Fischer Friedrich
- 👤 Amrein Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:00
CPC Classifications
G; G04; G04F; G04F13/00; G04F13/02; G04F13/023; G01; G01P; G01P3/00; G01P3/64; G01P3/68; G01P3/685
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) | 1949-10-21 | 1950-04-22 | 1950-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-21 | 1954-04-22 | 1954-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-21 | 1958-04-22 | 1958-10-22 | $7700.00 | Window Closed / Lapsed |