Patent US3407050A successfully refreshed from Google Patents.
US3407050A
Expired / Lapsed
US
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Duplex nickel material
Assignee: GLORIA WORTHINGTON TRAPP
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Filing: 1965-05-04
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Granted: 1968-10-22
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Expires: 1985-05-04
Abstract
No abstract record available.
Inventors
- 👤 Trapp Gloria Worthington
- 👤 Jr Howard Wayne Hayden
- 👤 Brophy Jere Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:17
CPC Classifications
C; C22; C22C; C22C19/00; B; B32; B32B; B32B15/00; B32B15/01; G; G07; G07F; G07F1/00; G07F1/06; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/9265; Y10S428/931; Y10S428/9335; Y10S428/939; Y10S428/94; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882; Y10T428/12903; Y10T428/1291; Y10T428/12931
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |