US2868610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making vacuum enclosures
Assignee: General Electric Co
•
Filing: 1954-10-22
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Granted: 1959-01-13
•
Expires: 1974-10-22
Abstract
No abstract record available.
Inventors
- 👤 James E Beggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:09
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/40; C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/636; C04B35/6365; C04B37/00; C04B37/003; C04B37/006; C04B37/02; C04B37/023; C04B37/026; H01J5/00; H01J5/20; H01J5/22; H01J5/26; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/123; C04B2237/124; C04B2237/125; C04B2237/30; C04B2237/40; C04B2237/403; C04B2237/50; C04B2237/64; C04B2237/74; C04B2237/76; C04B2237/765; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2098030A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |