US2839624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short interval time switch
Assignee: International Register Co
•
Filing: 1954-04-22
•
Granted: 1958-06-17
•
Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Stolle Anthony Dan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:53
CPC Classifications
G; G04; G04C; G04C23/00; G04C23/14; G04C23/18; G04C23/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1891946A
Cited
US1970432A
Cited
US2573130A
Cited
US2680166A
Cited
US2671830A
Cited
US2644047A
Cited
US2742538A
Cited
US2742540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |