Patent US2658623A successfully refreshed from Google Patents.
US2298591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain
Assignee: Individual
•
Filing: 1941-10-03
•
Granted: 1942-10-13
•
Expires: 1961-10-03
Abstract
No abstract record available.
Inventors
- 👤 David S Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:03
CPC Classifications
A; A44; A44C; A44C11/00; A44C11/002; Y; Y10; Y10S; Y10S59/00; Y10S59/90; Y10T; Y10T24/00; Y10T24/39; Y10T24/3902; Y10T24/3904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-10-12 | 1946-04-13 | 1946-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-12 | 1950-04-13 | 1950-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-12 | 1954-04-13 | 1954-10-13 | $7700.00 | Window Closed / Lapsed |