US3030996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut having tension indicating spring means
Assignee: Individual
•
Filing: 1957-11-25
•
Granted: 1962-04-24
•
Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Doerr Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:38
CPC Classifications
F; F16; F16B; F16B31/00; F16B31/02; F16B31/028; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US236624A
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US812299A
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US1346730A
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GB161685A
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US1820965A
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US1944595A
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CH219990A
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US2369865A
Cited
US2464152A
Cited
US2402583A
Cited
US2605804A
Cited
GB748969A
Cited
FR1102407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |