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US2552400A
Expired / Lapsed
US
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Sectional metal box
Assignee: Individual
•
Filing: 1948-08-02
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Granted: 1951-05-08
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Expires: 1968-08-02
Abstract
No abstract record available.
Inventors
- 👤 William F Brunia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:09
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/081
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |