Patent US2451997A successfully refreshed from Google Patents.
US2451997A
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Electronic timing control system
Assignee: Weltronic Co
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Filing: 1944-06-02
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Granted: 1948-10-19
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Expires: 1964-06-02
Abstract
No abstract record available.
Inventors
- 👤 Gustav E Undy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/248
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2193850A
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US2233810A
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US2232541A
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US2270799A
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US2303453A
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US2329090A
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US2366038A
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US2340077A
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US2370178A
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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) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |