US3454705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacer damper
Assignee: Lacal Industries Ltd
•
Filing: 1968-03-25
•
Granted: 1969-07-08
•
Expires: 1988-03-25
Abstract
No abstract record available.
Inventors
- 👤 Noble W Crosby
- 👤 Gordon J Clarke
- 👤 Robert C Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:06
CPC Classifications
H; H02; H02G; H02G7/00; H02G7/12; H02G7/125
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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |