Patent US2695616A successfully refreshed from Google Patents.
Patent US4746538A successfully refreshed from Google Patents.
Patent US2680561A successfully refreshed from Google Patents.
US2680561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handley
Assignee: —
•
Filing: —
•
Granted: 1954-06-08
•
Expires: 1971-06-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
G; G07; G07C; G07C1/00; G07C1/22; G07C1/24; G07F; G07F17/00; G07F17/32; G07F17/3202; G07F17/3286; G07F17/3288
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB377319A
Cited
GB510441A
Cited
GB572103A
Cited
US2479681A
Cited
US2534602A
Cited
US1056866A
Cited
US2290489A
Cited
US2456112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |