US3605681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scale conversion device
Assignee: George Richards and Co Ltd
•
Filing: 1969-05-29
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Granted: 1971-09-20
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Expires: 1989-05-29
Abstract
Abstract THIS INVENTION IS A DEVICE FOR FITTING TO MACHINE TOOLS ENABLING GRADUATIONS IN INCHES TO BE CONVERTED INTO GRADUATIONS ON THE METRIC SYSTEM BY USE OF A BELT WHICH RUNS OVER THE DRUM CARRYING THE INCH GRADUATIONS AS A PULLEY.
Inventors
- 👤 Beaumont John Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:37
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/002; G01B3/004; G01B3/006; Y; Y10; Y10S; Y10S116/00; Y10S116/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |