Patent US3421874A successfully refreshed from Google Patents.
US3421874A
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Apparatus for making pressurized reed switches
Assignee: IXYS Integrated Circuits Division Inc
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Filing: 1966-01-17
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Granted: 1969-01-14
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Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Harry Chanowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:41
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/005; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1882613A
Cited
US2265381A
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US2403073A
Cited
US2455317A
Cited
US2984046A
Cited
US3282670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |