Patent US2970238A successfully refreshed from Google Patents.
US2970238A
Expired / Lapsed
US
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Printed circuit armature
Assignee: Printed Motors Inc
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Filing: 1959-02-12
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Granted: 1961-01-31
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Expires: 1979-02-12
Abstract
No abstract record available.
Inventors
- 👤 Robert L Swiggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:17
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/54; H02K3/00; H02K3/04; H02K3/26; Y; Y10; Y10S; Y10S310/00; Y10S310/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2441960A
Cited
FR1160490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |