US2421640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric insulating tape
Assignee: International Standard Electric Corp
•
Filing: 1942-09-16
•
Granted: 1947-06-03
•
Expires: 1962-09-16
Abstract
No abstract record available.
Inventors
- 👤 New Archibald Alan
- 👤 Beckwith Dudley Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:47
CPC Classifications
C; C09; C09D; C09D125/00; C09D125/02; C09D125/16; G; G09; G09F; G09F1/00; G09F1/10; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/442; H01B3/48; H01B3/50; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB345939A
Cited
GB454923A
Cited
US2103841A
Cited
US2272996A
Cited
US2213423A
Cited
US2249987A
Cited
GB506290A
Cited
US2285570A
Cited
US2365646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |