Patent US2955174A successfully refreshed from Google Patents.
US2955174A
Expired / Lapsed
US
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Electrical relays
Assignee: AMF Inc
•
Filing: 1957-12-02
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Granted: 1960-10-04
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Expires: 1977-12-02
Abstract
No abstract record available.
Inventors
- 👤 Walter J Richert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1606164A
Cited
US2021199A
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GB605422A
Cited
US2404227A
Cited
US2436224A
Cited
US2515771A
Cited
US2477120A
Cited
US2824189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |