Patent US2256582A successfully refreshed from Google Patents.
US2256582A
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Assignee: Individual
•
Filing: 1940-12-10
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Granted: 1941-09-23
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Expires: 1960-12-10
Abstract
No abstract record available.
Inventors
- 👤 Ed L Sorensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:09
CPC Classifications
E; E04; E04G; E04G3/00; E04G3/28; E04G3/30; E04G3/32; A; A62; A62B; A62B1/00; A62B1/02; A62B1/06; B; B66; B66D; B66D5/00; B66D2700/00; B66D2700/03; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3916
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) | 1944-09-22 | 1945-03-24 | 1945-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-09-22 | 1949-03-24 | 1949-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-09-22 | 1953-03-24 | 1953-09-23 | $7700.00 | Window Closed / Lapsed |