US3407601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-hydraulic system and apparatus
Assignee: MARTIN TOOL WORKS Inc
•
Filing: 1965-07-26
•
Granted: 1968-10-29
•
Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:39
CPC Classifications
F; F15; F15B; F15B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US433822A
Cited
US473472A
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US718365A
Cited
US733497A
Cited
US987313A
Cited
US1389300A
Cited
US2820415A
Cited
DE1030686B
Cited
US3059433A
Cited
US3200596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |