Patent US4565348A successfully refreshed from Google Patents.
Patent US2178272A successfully refreshed from Google Patents.
US2178272A
Expired / Lapsed
US
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Tens transmitting device
Assignee: —
•
Filing: —
•
Granted: 1939-10-31
•
Expires: 1956-10-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:40
CPC Classifications
G; G06; G06C; G06C15/00; G06C15/26; G06M; G06M1/00; G06M1/14; G06M1/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |