US2738438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid structure and method of making same
Assignee: Varian Medical Systems Inc
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Filing: 1952-12-11
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Granted: 1956-03-13
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Expires: 1972-12-11
Abstract
No abstract record available.
Inventors
- 👤 Gordon L Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:45
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/38; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0015
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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |