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US2874237A
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Assignee: Individual
•
Filing: 1957-12-03
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Granted: 1959-02-17
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Expires: 1977-12-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Bernard Edward Shlesinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:31
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/242; H01H19/00; H01H19/02; H01H19/10; H01H19/54; H01H19/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1568550A
Cited
US1364967A
Cited
FR592873A
Cited
US2379047A
Cited
US2455137A
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US2444552A
Cited
US2472230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |