Patent US2663764A successfully refreshed from Google Patents.
US2663764A
Expired / Lapsed
US
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Telephone holding unit
Assignee: Individual
•
Filing: 1950-11-15
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Granted: 1953-12-22
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Expires: 1970-11-15
Abstract
No abstract record available.
Inventors
- 👤 Holmes Frank Grooms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:36
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US806372A
Cited
US2020527A
Cited
US2048865A
Cited
US2260703A
Cited
US2310032A
Cited
US2435806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |