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Patent US3519905A successfully refreshed from Google Patents.
US3519905A
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US
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Numerically controlled x-y servomechanisms for a drafting machine including secondary storage of permanent information
Assignee: UNIVERSAL DRAFTING MACHINE CORP
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Filing: 1966-08-26
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Granted: 1970-07-07
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Expires: 1986-08-26
Abstract
No abstract record available.
Inventors
- 👤 Charles H Little
- 👤 Waldo H Kliever
- 👤 Eugene L Wiemels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:13
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/02; B43L13/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3069608A
Cited
US2867724A
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US3099777A
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US3303332A
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US3206665A
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US3386020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |