US2901580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact device
Assignee: International Business Machines Corp
•
Filing: 1954-12-28
•
Granted: 1959-08-25
•
Expires: 1974-12-28
Abstract
No abstract record available.
Inventors
- 👤 Martin J Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:35
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/70; C; C22; C22C; C22C7/00; H01H; H01H29/00; H01H29/02; H01H29/04; H01H29/06; H01H50/00; H01H50/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US550360A
Cited
US1101009A
Cited
US1930093A
Cited
US1948687A
Cited
US2496555A
Cited
US2606256A
Cited
US2609464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |