US2559622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: Individual
•
Filing: 1945-04-03
•
Granted: 1951-07-10
•
Expires: 1965-04-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Hildyard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
H; H04; H04Q; H04Q9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2008563A
Cited
US1952369A
Cited
US1801657A
Cited
US2095124A
Cited
US2282046A
Cited
US2330357A
Cited
US2413440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |