Patent US2673243A successfully refreshed from Google Patents.
US2673243A
Expired / Lapsed
US
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Telephone coin collection system
Assignee: Automatic Electric Laboratories Inc
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Filing: 1950-07-29
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Granted: 1954-03-23
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Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Lomax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:43
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1200788A
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US1722351A
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US1859885A
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US1924095A
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US2248575A
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US2271681A
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US2372262A
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US2471087A
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US2509477A
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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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |