Patent US2458283A successfully refreshed from Google Patents.
US2458283A
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Impulse generator
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1944-10-23
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Granted: 1949-01-04
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Expires: 1964-10-23
Abstract
No abstract record available.
Inventors
- 👤 Harold J Mccreary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:07
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2073701A
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US1979054A
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US2153202A
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US2080273A
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US2104142A
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US2323019A
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US2282916A
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US2350888A
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US2297119A
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US2359967A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |