Patent US2822432A successfully refreshed from Google Patents.
US2822432A
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US
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Casing for telephone instruments
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1951-12-29
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Granted: 1958-02-04
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Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 Blomberg Knut Hugo
- 👤 Lindstrom Helge Edward
- 👤 Thames Hans Gosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:37
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/17; H04M1/0202; H04M1/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2511786A
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US1077225A
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US1941237A
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US1958668A
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US2039625A
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US2124615A
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US2183744A
Cited
US2419388A
Cited
US2405543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |