US2568756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reservation system
Assignee: International Standard Electric Corp
•
Filing: 1946-11-09
•
Granted: 1951-09-25
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Mcwhirter Eric Malcolm Swift
- 👤 Ward Hugh Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:00
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/221
Claims Analysis
Total Claims: 0
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US2446037A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |