US2492375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone set
Assignee: LEICH ELECTRIC CO
•
Filing: 1944-07-20
•
Granted: 1949-12-27
•
Expires: 1964-07-20
Abstract
No abstract record available.
Inventors
- 👤 Hans P Boswau
- 👤 Alexander C Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:51
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/0297
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE288123C
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US1368241A
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GB145380A
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US1734124A
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US1762641A
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US2076244A
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US2215860A
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US2277280A
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US2277296A
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US2348592A
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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) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |