US2578801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epicyclic mechanism
Assignee: Individual
•
Filing: 1947-06-18
•
Granted: 1951-12-18
•
Expires: 1967-06-18
Abstract
No abstract record available.
Inventors
- 👤 Russell P Harshberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:13
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/38; F; F16; F16H; F16H13/00; F16H13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1298560A
Cited
US1368570A
Cited
US1986177A
Cited
US2131787A
Cited
US2344078A
Cited
US2293407A
Cited
US2362998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |