Patent US3257075A successfully refreshed from Google Patents.
US3257075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double length slide rules
Assignee: Individual
•
Filing: 1964-06-15
•
Granted: 1966-06-21
•
Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Sam J Nayman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:11
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/02; G06G1/10; G06G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A SLIDE RULE, A FIRST LOGARITHMIC SCALE DIVIDED INTO TWO HALF SCALE PARTS OF EQUAL LENGTH, ONE HALF SCALE PART HAVING OPPOSITE END INDICES ALIGNED TRANSVERSELY OF THE RULE WITH OPPOSITE END INDICES OF THE OTHER HALF SCALE PART, AND A SECOND LOGARITHMIC SCALE HAVING A TOTAL LENGTH EQUAL TO TWO-THIRDS THE LENGTH OF EACH OF THE HALF SCALE PARTS SAID ONE HALF SCALE PART HAVING A FIRST DESIGNATED INDEX POINT THEREON SPACED FROM THE LEFT END OF SAID ONE HALF SCALE PART A DISTANCE EQUAL TO THE LENGTH OF THE SECOND SCALE AND THE OTHER SCALE PART HAVING A SECOND POINT DESIGNNATED INDEX THEREON SPACED FROM THE RIGHT END OF THE SAID OTHER HALF SCALE PART A DISTANCE EQUAL TO THE LENGTH OF THE SECOND SCALE, WHEREBY THE SECOND SCALE PROVIDES READINGS OF CUBES OF NUMBERS ON THE RESPECTIVE HALF SCALE PARTS WHEN ONE END OF THE SECOND SCALE IS ALIGNED SELECTIVELY WITH EITHER OF SAID DESIGNATED INDEX POINTS.
Claim 2
Dependent Claim
161 words
IN A SLIDE RULE, A FIRST LOGARITHMIC SCALE DIVIDED INTO TWO HALF SCALE PARTS OF EQUAL LENGTH, ONE HALF SCALE PART HAVING OPPOSITE END INDICES ALIGNED TRANSVERSELY OF THE RULE WITH OPPOSITE END INDICES OF THE OTHER HALF SCALE PART, AND A SECOND LOGARITHMIC SCALE HAVING A TOTAL LENGTH EQUAL TO TWO-THIRDS THE LENGTH OF EACH OF THE HALF SCALE PARTS SAID ONE HALF SCALE PART HAVING A FIRST DESIGNATED INDEX POINT THEREON SPACED FROM THE LEFT END OF SAID ONE HALF SCALE PART A DISTANCE EQUAL TO THE LENGTH OF THE SECOND SCALE AND THE OTHER SCALE PART HAVING A SECOND POINT DESIGNNATED INDEX THEREON SPACED FROM THE RIGHT END OF THE SAID OTHER HALF SCALE PART A DISTANCE EQUAL TO THE LENGTH OF THE SECOND SCALE, WHEREBY THE SECOND SCALE PROVIDES READINGS OF CUBES OF NUMBERS ON THE RESPECTIVE HALF SCALE PARTS WHEN ONE END OF THE SECOND SCALE IS ALIGNED SELECTIVELY WITH EITHER OF SAID DESIGNATED INDEX POINTS.
References Cited (Backward Citations)
US1168059A
Cited
US1250379A
Cited
US1525752A
Cited
US2138879A
Cited
US2285722A
Cited
US2422649A
Cited
US2894337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |