US2848567A
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US
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Assignee: Daystrom Inc
•
Filing: 1955-06-06
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Granted: 1958-08-19
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Expires: 1975-06-06
Abstract
No abstract record available.
Inventors
- 👤 Royden F Estoppey
- 👤 Frederick M Bender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/56; H01H19/58; H01H19/585; H01H19/02; H01H19/10; H01H19/12; H01H9/00; H01H9/02; H01H9/0271
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2649513A
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US2682643A
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US2742537A
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US2678985A
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US2675436A
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US2707741A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |