US3548227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic linear drives
Assignee: QUINCY TECHNOLOGIES Inc A CORP OF DE
•
Filing: 1969-04-03
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Granted: 1970-12-15
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Expires: 1989-04-03
Abstract
No abstract record available.
Inventors
- 👤 Walter R Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:57
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; F; F16; F16H; F16H49/00; F16H49/001; H02K41/00; H02K41/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2446393A
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US2696579A
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US2956188A
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US2860266A
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US3159758A
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US3169201A
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US3169202A
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US3331974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |