US3285554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support device
Assignee: Individual
•
Filing: 1964-08-12
•
Granted: 1966-11-15
•
Expires: 1984-08-12
Abstract
No abstract record available.
Inventors
- 👤 Frank J Voelkerding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:47
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/658; E01F9/673; E01F9/685
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |