US3491971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Illinois Tool Works Inc
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Filing: 1968-01-22
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Granted: 1970-01-27
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Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Julian V Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:26
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/26; H02G3/266; F; F16; F16L; F16L3/00; F16L3/08; F16L3/12; F16L3/13; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3439; Y10T24/344; Y10T24/3444
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) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |