US2909031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration isolation of power head
Assignee: Individual
•
Filing: 1957-07-12
•
Granted: 1959-10-20
•
Expires: 1977-07-12
Abstract
No abstract record available.
Inventors
- 👤 Kiekhaefer Elmer Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:41
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/12; B; B63; B63H; B63H21/00; B63H21/30; B63H21/305; F01N13/004; F01N3/00; F01N3/02; F01N3/04; F01N3/043; F01N2590/00; F01N2590/02; F01N2590/021; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1131862A
Cited
US2024193A
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US2206258A
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US2585774A
Cited
US2757650A
Cited
US2772649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |