US1889271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact pad
Assignee: Individual
•
Filing: 1931-04-22
•
Granted: 1932-11-29
•
Expires: 1951-04-22
Abstract
No abstract record available.
Inventors
- 👤 Gustav A Zerne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:59
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0472
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) | 1935-11-29 | 1936-05-30 | 1936-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-29 | 1940-05-30 | 1940-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-29 | 1944-05-30 | 1944-11-29 | $7700.00 | Window Closed / Lapsed |