US2979588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum switch
Assignee: Jennings Radio Manufacturing Corp
•
Filing: 1958-12-09
•
Granted: 1961-04-11
•
Expires: 1978-12-09
Abstract
No abstract record available.
Inventors
- 👤 Jennings Jo Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:47
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1313856A
Cited
DE407725C
Cited
FR638489A
Cited
US1784302A
Cited
DE563140C
Cited
US1814851A
Cited
US1819154A
Cited
DE532886C
Cited
US1952184A
Cited
USRE21087E
Cited
US1997288A
Cited
US2326074A
Cited
US2472625A
Cited
US2740868A
Cited
US2839630A
Cited
US2794101A
Cited
US2773154A
Cited
US2900476A
Cited
US2897322A
Cited
US2892912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |