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US2913551A
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Assignee: Individual
•
Filing: 1956-06-04
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Granted: 1959-11-17
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Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Vigren Sten Daniel
- 👤 Broberg Walter Otto Wilhelm
- 👤 Zander Rolf Albin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:56
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/34; H01H50/54; H01H50/56; H01H50/58; H01H51/00; H01H51/02; H01H51/04; H01H51/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1812545A
Cited
US1883137A
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US1857828A
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US2154338A
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GB627570A
Cited
US2491272A
Cited
US2582131A
Cited
BE503963A
Cited
FR1035722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |