US2158044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making contactor bases for electric lamps, tubes, and the like
Assignee: HYGRADE SYLVANLA Corp
•
Filing: 1935-11-30
•
Granted: 1939-05-09
•
Expires: 1955-11-30
Abstract
No abstract record available.
Inventors
- 👤 Cyrus W Haller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/02; H05K3/04; H05K3/041; B; B29; B29C; B29C43/00; B29C43/02; B29C43/18; E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F11/16; H01; H01J; H01J9/00; H01J9/24; H01J9/30; H05K9/00; H05K9/0007; H05K9/002; H05K9/0039; H05K2201/00; H05K2201/09; H05K2201/09009; H05K2201/09118; H05K2203/00; H05K2203/01; H05K2203/0104; H05K2203/0108; H05K3/10; H05K3/20; H05K3/202; Y; Y10; Y10S; Y10S264/00; Y10S264/76; Y10S425/00; Y10S425/041; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998
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) | 1942-05-08 | 1942-11-07 | 1943-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-08 | 1946-11-07 | 1947-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-08 | 1950-11-07 | 1951-05-09 | $7700.00 | Window Closed / Lapsed |