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US3420008A
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US
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Assignee: Heald Machine Co
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Filing: 1966-03-14
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Granted: 1969-01-07
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert R Uhtenwoldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA679456A
Cited
US2382311A
Cited
US2671293A
Cited
US2979870A
Cited
US3089289A
Cited
US3269064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |