US2219331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous body
Assignee: General Electric Co
•
Filing: 1937-12-01
•
Granted: 1940-10-29
•
Expires: 1957-12-01
Abstract
No abstract record available.
Inventors
- 👤 Pirani Marcello
- 👤 Partridge John Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:48
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/06; C03C2201/00; C03C2201/06; C03C2201/30; C03C2201/40; C03C2201/54; C03C2203/00; C03C2203/10
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) | 1943-10-29 | 1944-04-29 | 1944-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-29 | 1948-04-29 | 1948-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-29 | 1952-04-29 | 1952-10-29 | $7700.00 | Window Closed / Lapsed |