Patent US2311412A successfully refreshed from Google Patents.
Patent US1111660A successfully refreshed from Google Patents.
US2750802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternate action mechanism
Assignee: —
•
Filing: —
•
Granted: 1956-06-19
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Expires: 1973-06-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:13
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H13/40; H01H13/42; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/18896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US720858A
Cited
US1548481A
Cited
US1750456A
Cited
US1960020A
Cited
US1997209A
Cited
US2021041A
Cited
US2295484A
Cited
US2460087A
Cited
US2454185A
Cited
US2508040A
Cited
US2604793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |