US2703374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stroboscopic light source
Assignee: Individual
•
Filing: 1951-01-15
•
Granted: 1955-03-01
•
Expires: 1971-01-15
Abstract
No abstract record available.
Inventors
- 👤 Fruengel Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:42
CPC Classifications
H; H01; H01T; H01T2/00; H01T2/02; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/06; H01J61/073; H01J61/0732; H01J61/84; H01J61/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1159914A
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US1418022A
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US2007939A
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US2130077A
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US2169723A
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US2351254A
Cited
US2454761A
Cited
US2567491A
Cited
US2404116A
Cited
US2516326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |