US2551730A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1948-06-04
•
Granted: 1951-05-08
•
Expires: 1968-06-04
Abstract
No abstract record available.
Inventors
- 👤 Sol Anthony R Del
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
G; G07; G07F; G07F15/00; G07F15/12; H; H01; H01H; H01H7/00; H01H7/08; Y; Y10; Y10S; Y10S200/00; Y10S200/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1798466A
Cited
US2102372A
Cited
US2148472A
Cited
US2225649A
Cited
US2376403A
Cited
US2487573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |