US2638345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Occupant propelled roundabout
Assignee: Individual
•
Filing: 1947-08-16
•
Granted: 1953-05-12
•
Expires: 1967-08-16
Abstract
No abstract record available.
Inventors
- 👤 Benjamin E Norvell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:14
CPC Classifications
A; A63; A63G; A63G1/00; A63G1/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US475256A
Cited
US605629A
Cited
US584989A
Cited
GB190804016A
Cited
US1384215A
Cited
US1439478A
Cited
AT124760B
Cited
GB343835A
Cited
FR41300E
Cited
GB523943A
Cited
US2206750A
Cited
US2468893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |