US1900099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing contact pins in radiotube bases
Assignee: Westinghouse Lamp Co
•
Filing: 1929-05-25
•
Granted: 1933-03-07
•
Expires: 1949-05-25
Abstract
No abstract record available.
Inventors
- 👤 John E Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:47
CPC Classifications
A; A43; A43D; A43D100/00; A43D100/02; H; H01; H01R; H01R13/00; H01R13/40; H01R13/405; H01R13/415; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/49147; Y10T29/49151; Y10T29/49153; Y10T29/49204; Y10T29/49208; Y10T29/49218; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/53; Y10T29/5313; Y10T29/53174; Y10T29/532; Y10T29/53209
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) | 1936-03-06 | 1936-09-05 | 1937-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-06 | 1940-09-05 | 1941-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-06 | 1944-09-05 | 1945-03-07 | $7700.00 | Window Closed / Lapsed |