US2444312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of sealing metal casings enclosing vibratile elements
Assignee: RCA Corp
•
Filing: 1945-05-01
•
Granted: 1948-06-29
•
Expires: 1965-05-01
Abstract
No abstract record available.
Inventors
- 👤 Wesley M Roberds
- 👤 Joseph G Beard
- 👤 Felix C Blancha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:37
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/28; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0044; Y; Y10; Y10S; Y10S53/00; Y10S53/02; Y10T; Y10T29/00; Y10T29/42; Y10T29/49; Y10T29/49002; Y10T29/49004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US39616A
Cited
US246544A
Cited
US717711A
Cited
US1366473A
Cited
US1842149A
Cited
US1886803A
Cited
US1870904A
Cited
US2203545A
Cited
GB544834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |