Patent US3069502A successfully refreshed from Google Patents.
US3069502A
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Coin identification and signalling telephone device
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1958-10-30
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Granted: 1962-12-18
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Expires: 1978-10-30
Abstract
No abstract record available.
Inventors
- 👤 Edstrom Nils Herbert
- 👤 Harlin Carl-Erik Wilhelm
- 👤 Katzeff Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:25
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1386701A
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US2020466A
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US2082561A
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US2251301A
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US2623950A
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US2681386A
Cited
US2676209A
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US2732432A
Cited
US2819343A
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US2909609A
Cited
US2817709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |