Patent US2917709A successfully refreshed from Google Patents.
US2917709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Donald n
Assignee: —
•
Filing: —
•
Granted: 1959-12-15
•
Expires: 1976-12-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:21
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1397441A
Cited
US2282590A
Cited
US2425408A
Cited
US2562183A
Cited
US2484823A
Cited
US2693928A
Cited
US2580815A
Cited
US2716680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |