US2372994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Label
Assignee: Individual
•
Filing: 1942-04-07
•
Granted: 1945-04-03
•
Expires: 1962-04-07
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/36; H01B7/368; G; G09; G09F; G09F3/00; G09F3/08; G09F3/10; G09F3/02; G09F2003/0208; Y; Y10; Y10S; Y10S206/00; Y10S206/82; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1082; Y10T428/00; Y10T428/16; Y10T428/163
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) | 1948-04-02 | 1948-10-02 | 1949-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-02 | 1952-10-02 | 1953-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-02 | 1956-10-02 | 1957-04-03 | $7700.00 | Window Closed / Lapsed |