Patent US2731522A successfully refreshed from Google Patents.
US2731522A
Expired / Lapsed
US
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Telephone control device
Assignee: Individual
•
Filing: 1954-11-15
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Granted: 1956-01-17
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Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Maneck K Anklesaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:34
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/06; H04M1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2558661A
Cited
US2647959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |