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US2537974A
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Impulse generator with feeler and displaceable register members
Assignee: International Standard Electric Corp
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Filing: 1947-02-18
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Granted: 1951-01-16
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Expires: 1967-02-18
Abstract
No abstract record available.
Inventors
- 👤 Devaux Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:25
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US757030A
Cited
US1478419A
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DE499834C
Cited
AT113837B
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US1891633A
Cited
US2253650A
Cited
FR862931A
Cited
US2386486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |