Patent US2044831A successfully refreshed from Google Patents.
US2044831A
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Assignee: International Standard Electric Corp
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Filing: 1932-08-05
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Granted: 1936-06-23
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Expires: 1952-08-05
Abstract
No abstract record available.
Inventors
- 👤 Louis N Chereau
- 👤 Edmond M Deloraine
- 👤 Lucien R Guilbaud
- 👤 Florent E A Smets
- 👤 Stanislas Van Mierlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:02
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/06; H04N1/0607; H04N1/0621; H04N1/0635; H04N1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-06-23 | 1939-12-23 | 1940-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-06-23 | 1943-12-23 | 1944-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-06-23 | 1947-12-23 | 1948-06-23 | $7700.00 | Window Closed / Lapsed |