US3448253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
"quasi-absolute" digital control system for winding filament on mandrel
Assignee: Boeing North American Inc
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Filing: 1963-11-22
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Granted: 1969-06-03
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Expires: 1983-11-22
Abstract
No abstract record available.
Inventors
- 👤 Ernest K Bramblett
- 👤 Richard W Clapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/64; B65H81/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/188; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/071; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34153; G05B2219/35; G05B2219/35274; G05B2219/35279; G05B2219/35373; G05B2219/36; G05B2219/36366; G05B2219/36571; G05B2219/36574; G05B2219/36591; G05B2219/41; G05B2219/41475; G05B2219/42; G05B2219/42186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3062995A
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US2964252A
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US2922940A
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US3166104A
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US3148316A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |