Patent US3170689A successfully refreshed from Google Patents.
US3170689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foul detecting system with transistor output switch
Assignee: Individual
•
Filing: 1962-04-27
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Granted: 1965-02-23
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Brown
- 👤 Thomas A Crugnale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:30
CPC Classifications
A; A63; A63D; A63D1/00; A63D1/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A FOUL DETECTING AND INDICATING DEVICE COMPRISING MEANS FOR PROJECTING A BEAM ACROSS THE FOUL LINE OF A BOWLING LANE, MEANS FOR RECEIVING SAID BEAM, A TRANSISTOR OPERATIVELY CONNECTED TO A SOURCE OF POWER AND HAVING A BASE AND A COLLECTOR AND AN EMITTER, A TRANSFORMER HAVING A PRIMARY WINDING AND A SECONDARY WINDING, INDICATING MEANS ADAPTED FOR OPERATING UPON APPLICATION OF ELECTRICAL POWER THERETO, SAID INDICATING MEANS AND SECONDARY
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |