US2565508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulator for pile-up switches
Assignee: STC PLC
•
Filing: 1945-09-24
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Granted: 1951-08-28
•
Expires: 1965-09-24
Abstract
No abstract record available.
Inventors
- 👤 Lomholt Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:53
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H63/00; H01H63/02; H01H63/06; Y; Y10; Y10S; Y10S200/00; Y10S200/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |