US3257658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calculating machines
Assignee: Bell Punch Co Ltd
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Filing: 1963-07-31
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Granted: 1966-06-21
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Lloyd John George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:53
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09G3/06; G09G3/10; H; H03; H03K; H03K17/00; H03K17/94; H03K17/965; H03K17/975; H03K17/98
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A CALCULATING MACHINE, DIGIT-ENTRY CONTROLLING APPARATUS COMPRISING AN ELECTRICALLY-OPERATED COUNTING DEVICE, A PULSE GENERATOR, A PLURALITY OF GAS-FILLED TRIGGER TUBES EACH CONTROLLING THE ENTRY OF A PREDETERMINED NUMBER OF PULSES FROM SAID PULSE GENERATOR INTO SAID COUNTING DEVICE, AND MEANS FOR CAUSING ANY ONE OF SAID TRIGGER TUBES TO BE RENDERED CONDUCTIVE BY THE PROXIMITY OF AN EARTHED OBJECT.
Claim 2
Dependent Claim
60 words
IN A CALCULATING MACHINE, DIGIT-ENTRY CONTROLLING APPARATUS COMPRISING AN ELECTRICALLY-OPERATED COUNTING DEVICE, A PULSE GENERATOR, A PLURALITY OF GAS-FILLED TRIGGER TUBES EACH CONTROLLING THE ENTRY OF A PREDETERMINED NUMBER OF PULSES FROM SAID PULSE GENERATOR INTO SAID COUNTING DEVICE, AND MEANS FOR CAUSING ANY ONE OF SAID TRIGGER TUBES TO BE RENDERED CONDUCTIVE BY THE PROXIMITY OF AN EARTHED OBJECT.
References Cited (Backward Citations)
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 |