US3451271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically controlled exercising and weight lifting device
Assignee: DAVID E KNOBLAUCH
•
Filing: 1966-06-30
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Granted: 1969-06-24
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Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 David E Knoblauch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
A; A63; A63B; A63B21/00; A63B21/008; A63B21/0083; A63B21/02; A63B21/04; A63B21/40; A63B21/4027; A63B21/4033; A63B21/4035; A63B21/4041; A63B21/4045; A63B23/00; A63B23/035; A63B23/03516; A63B23/03525; A63B23/12; A63B23/1209; A63B2208/00; A63B2208/02; A63B2208/0204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US177251A
Cited
US3359802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |