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US2618693A
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US
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Sheets-xsheet i
Assignee: —
•
Filing: —
•
Granted: 1952-11-18
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:11
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/001; F; F02; F02P; F02P5/00; F02P5/02; H01H50/00; H01H50/16; H01H50/18; H01H50/32; H01H71/00; H01H71/10; H01H71/12; H01H71/123; H01H83/00; H01H83/20; H01H89/00; H01H89/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |