US3427755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter-force motivated back rest
Assignee: Brown and Sharpe Manufacturing Co
•
Filing: 1965-12-20
•
Granted: 1969-02-18
•
Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 George Napoleon Levesque
- 👤 Paul Eugene Taylor
- 👤 Neil Ide Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:18
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/16; B24B41/00; B24B41/06; B24B41/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2099161A
Cited
US2141596A
Cited
US2834160A
Cited
US3118258A
Cited
US3233368A
Cited
US3274738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |