US2529436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal film attenuator
Assignee: New York University
•
Filing: 1944-06-14
•
Granted: 1950-11-07
•
Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Weber Ernst
- 👤 John W E Griemsmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/22; H01P1/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1835582A
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US1957538A
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US1905353A
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US2059034A
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US2030178A
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US2125597A
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US2151157A
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US2197123A
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US2197122A
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US2262134A
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US2281843A
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US2429401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |