Patent US3437981A successfully refreshed from Google Patents.
US3437981A
Expired / Lapsed
US
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Electrical wire joiner
Assignee: Individual
•
Filing: 1967-06-29
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Granted: 1969-04-08
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Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert Joseph Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:31
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/28; H01R4/50; Y; Y10; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US206169A
Cited
US1331203A
Cited
AT95231B
Cited
US1526265A
Cited
US1960191A
Cited
US2076072A
Cited
US2590886A
Cited
US3319215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |