US2831923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction pickup and transmission system
Assignee: Individual
•
Filing: 1954-04-22
•
Granted: 1958-04-22
•
Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin B Block
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:37
CPC Classifications
H; H04; H04M; H04M11/00; H04B; H04B5/00; H04B5/20; H04B5/24; H04B5/26; H04B5/263; H04B5/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2268665A
Cited
US2632811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |