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US2576346A
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US
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Electrical marker generator circuit
Assignee: Individual
•
Filing: 1945-07-09
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Granted: 1951-11-27
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Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Lawrence H Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:20
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2092081A
Cited
US2121359A
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US2234830A
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US2369631A
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US2350069A
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US2406858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |