Patent US1365638A successfully refreshed from Google Patents.
US1365638A
Expired / Lapsed
US
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X-ray apparatus
Assignee: General Electric Co
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Filing: 1918-07-15
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Granted: 1921-01-11
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Expires: 1938-07-15
Abstract
No abstract record available.
Inventors
- 👤 William D Coolidge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:25
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/30; H05G1/48
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) | 1924-01-11 | 1924-07-12 | 1925-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-01-11 | 1928-07-12 | 1929-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-01-11 | 1932-07-12 | 1933-01-11 | $7700.00 | Window Closed / Lapsed |