US2978804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of classifying non-magnetic elements
Assignee: GTE Sylvania Inc
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Filing: 1958-08-13
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Granted: 1961-04-11
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Expires: 1978-08-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph B Soper
- 👤 Richard C Tonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:36
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0428; B; B07; B07C; B07C5/00; B07C5/34; B07C5/344; B28; B28D; B28D5/00; B28D5/0005; B28D5/0011; B28D5/02; B28D5/022; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/12; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/4981
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB207886A
Cited
US2865082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |