US2500264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handset support and inductive pickup for telephone signal amplifying system
Assignee: Individual
•
Filing: 1946-12-04
•
Granted: 1950-03-14
•
Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Matthys L M Souget
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:35
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; H04M1/215; H04M1/2155; H04M1/60; H04M1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1697007A
Cited
US1630536A
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US2071053A
Cited
US2160829A
Cited
US2082130A
Cited
US2214992A
Cited
US2354470A
Cited
US2402341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |