US2520243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: HOWARD SALES Co
•
Filing: 1945-11-01
•
Granted: 1950-08-29
•
Expires: 1965-11-01
Abstract
No abstract record available.
Inventors
- 👤 Allen S Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:36
CPC Classifications
G; G09; G09F; G09F7/00; G09F7/02; G09F7/06; Y; Y10; Y10S; Y10S439/00; Y10S439/928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22801E
Cited
US1117435A
Cited
US1192982A
Cited
US1844097A
Cited
US2119157A
Cited
US2059451A
Cited
US2220618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |