US3268231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for reproduction of phonograph records and the like
Assignee: Individual
•
Filing: 1963-09-24
•
Granted: 1966-08-23
•
Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick V Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:22
CPC Classifications
G; G11; G11B; G11B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A LOW-NOISE ULTRA-LIGHTWEIGHT PICKUP COMPRISING AN ARM-SUPPORTING STYLUS FOR ENGAGING THE GROOVES OF PHONOGRAPH RECORDS OF ELASTIC MODULUS EV, GROOVE VELOCITY V AND AN UPPERMOST RECORDED FREQUENCY FU, THE STYLUS HAVING AN EQUIVALENT MASS OF VALUE ONLY SUFFICIENT TO RESONATE WITH THE ELASTICITY OF THE WALLS OF THE RECORD GROOVES AT A FREQUENCY FO ABOVE BOTH FU AND THE CUT-OFF TRANSLATIONLOSS FREQUENCY FG DETERMINED SUBSTANTIALLY BY THE RELATIONSHIP
Claim 2
Dependent Claim
68 words
A LOW-NOISE ULTRA-LIGHTWEIGHT PICKUP COMPRISING AN ARM-SUPPORTING STYLUS FOR ENGAGING THE GROOVES OF PHONOGRAPH RECORDS OF ELASTIC MODULUS EV, GROOVE VELOCITY V AND AN UPPERMOST RECORDED FREQUENCY FU, THE STYLUS HAVING AN EQUIVALENT MASS OF VALUE ONLY SUFFICIENT TO RESONATE WITH THE ELASTICITY OF THE WALLS OF THE RECORD GROOVES AT A FREQUENCY FO ABOVE BOTH FU AND THE CUT-OFF TRANSLATIONLOSS FREQUENCY FG DETERMINED SUBSTANTIALLY BY THE RELATIONSHIP
References Cited (Backward Citations)
US3051494A
Cited
US3167317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |