US2662115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intercommunicating apparatus
Assignee: Webster Electric Co Inc
•
Filing: 1948-05-03
•
Granted: 1953-12-08
•
Expires: 1968-05-03
Abstract
No abstract record available.
Inventors
- 👤 Richard H Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:56
CPC Classifications
H; H04; H04M; H04M9/00; H04M9/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2099442A
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US2162369A
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US2275405A
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US2249456A
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US2269142A
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US2269141A
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US2269143A
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US2269144A
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US2326617A
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US2326616A
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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) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |