US2731632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable indicator
Assignee: SPX Technologies Inc
•
Filing: 1952-02-13
•
Granted: 1956-01-17
•
Expires: 1972-02-13
Abstract
No abstract record available.
Inventors
- 👤 Oscar S Field
- 👤 Ralph W Hewes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:26
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US518037A
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US1834700A
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US2074066A
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US1964047A
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US2113323A
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US2189581A
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US2397604A
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US2315298A
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US2476673A
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US2455210A
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US2595190A
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US2617870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |