Patent US3500154A successfully refreshed from Google Patents.
US3500154A
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US
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Digital control for a stepping motor drive used in an automatic drafting machine
Assignee: WAYNE C DOWLING
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Filing: 1967-05-09
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Granted: 1970-03-10
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Expires: 1987-05-09
Abstract
No abstract record available.
Inventors
- 👤 Leon J Arp
- 👤 Wayne C Dowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:56
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/22; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/40; G05B2219/00; G05B2219/30; G05B2219/35; G05B2219/35436; G05B2219/35481; G05B2219/43; G05B2219/43006
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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |