Patent US2789167A successfully refreshed from Google Patents.
US2789167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Erbstosser
Assignee: —
•
Filing: —
•
Granted: 1957-04-16
•
Expires: 1974-04-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:29
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/60; H01H19/62; H01H25/00; H01H25/04; H01H25/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1932220A
Cited
US1998355A
Cited
US1763006A
Cited
DE550172C
Cited
US2006690A
Cited
GB470023A
Cited
US2278629A
Cited
US2431929A
Cited
US2381077A
Cited
US2635154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |