Patent US2559768A successfully refreshed from Google Patents.
US2559768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical and horizontal axes roundabout
Assignee: IRA HOWARD
•
Filing: 1948-04-30
•
Granted: 1951-07-10
•
Expires: 1968-04-30
Abstract
No abstract record available.
Inventors
- 👤 Ira F Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:00
CPC Classifications
A; A63; A63G; A63G1/00; A63G1/08; A63G1/10; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US420758A
Cited
US1346576A
Cited
US1640038A
Cited
US2158073A
Cited
US2113131A
Cited
US2203971A
Cited
US2282763A
Cited
US2239506A
Cited
US2357481A
Cited
US2368989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |