US2757225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doors for radio shielded enclosures
Assignee: Ace Engineering & Machine Co I
•
Filing: 1952-12-24
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Granted: 1956-07-31
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Expires: 1972-12-24
Abstract
No abstract record available.
Inventors
- 👤 William M Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:57
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0001; E; E06; E06B; E06B5/00; E06B5/10; E06B5/18; H05K9/0007; H05K9/0015; Y; Y10; Y10S; Y10S277/00; Y10S277/92; Y10S277/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |