Patent US2789613A successfully refreshed from Google Patents.
US2789613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key holder
Assignee: Individual
•
Filing: 1955-04-21
•
Granted: 1957-04-23
•
Expires: 1975-04-21
Abstract
No abstract record available.
Inventors
- 👤 Harry B Corsaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:02
CPC Classifications
A; A45; A45C; A45C11/00; A45C11/32; A45C11/327; A45C11/328; Y; Y10; Y10T; Y10T70/00; Y10T70/80; Y10T70/8432; Y10T70/8676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371308A
Cited
US1859158A
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US1885957A
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US2008398A
Cited
US2076895A
Cited
US2322920A
Cited
US2306970A
Cited
US2517500A
Cited
US2669859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |