Patent US3516146A successfully refreshed from Google Patents.
US3516146A
Expired / Lapsed
US
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Method of assembling a helical scanning assembly
Assignee: WESTEL CO
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Filing: 1968-06-19
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Granted: 1970-06-23
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Expires: 1988-06-19
Abstract
No abstract record available.
Inventors
- 👤 Alexander R Maxey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/61; G11B5/00; G11B5/48; G11B5/52; G11B5/53; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49895; Y10T29/49902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3062922A
Cited
US3227815A
Cited
US3418424A
Cited
GB913326A
Cited
US3319014A
Cited
US3428760A
Cited
US3391248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |