US2917601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit relay
Assignee: Northrop Grumman Corp
•
Filing: 1957-09-16
•
Granted: 1959-12-15
•
Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Hatchett George Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:05
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49155; Y10T29/49165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US473595A
Cited
US814946A
Cited
US806009A
Cited
US1238337A
Cited
US2474233A
Cited
US2616994A
Cited
US2790875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |