US1905751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum sealing structure
Assignee: General Electric Co
•
Filing: 1929-12-26
•
Granted: 1933-04-25
•
Expires: 1949-12-26
Abstract
No abstract record available.
Inventors
- 👤 William K Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H9/00; H01H9/52; H01H2009/526; H01H33/668; H01H33/6683
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1936-04-24 | 1936-10-24 | 1937-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-24 | 1940-10-24 | 1941-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-24 | 1944-10-24 | 1945-04-25 | $7700.00 | Window Closed / Lapsed |