US2510604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocking relay structure
Assignee: International Business Machines Corp
•
Filing: 1948-12-30
•
Granted: 1950-06-06
•
Expires: 1968-12-30
Abstract
No abstract record available.
Inventors
- 👤 Pfaff Wesley
- 👤 Clair D Lake
- 👤 Fiehl Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:04
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/02; H01H51/04; H01H51/06; H01H51/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193793A
Cited
US656796A
Cited
US1724924A
Cited
US1964268A
Cited
US2098070A
Cited
US2360664A
Cited
US2374017A
Cited
US2382995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |