US1476048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid for protecting rontgen images against secondary rays
Assignee: WAPPLER ELECTRIC CO Inc
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Filing: 1923-05-17
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Granted: 1923-12-04
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Expires: 1943-05-17
Abstract
No abstract record available.
Inventors
- 👤 Bucky Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:24
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/025; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002
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) | 1926-12-03 | 1927-06-04 | 1927-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-03 | 1931-06-04 | 1931-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-03 | 1935-06-04 | 1935-12-04 | $7700.00 | Window Closed / Lapsed |