US3045067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone system with registration for waiting calls
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1958-05-05
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Granted: 1962-07-17
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Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 Nilsson Nils Emil
- 👤 Bjork Johan Carl Harold
- 👤 Rodnert Gustav Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:53
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/50; H04M3/51; H04M3/523; H04M1/00; H04M1/64; H04M1/65; H04M15/00; H04M15/08; H04M3/54; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |