US3308276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote terminal
Assignee: International Business Machines Corp
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Filing: 1962-10-18
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Granted: 1967-03-07
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 George D Panagiotou
- 👤 Norman J Woodland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:48
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PASSIVE REMOTE TERMINAL FOR USE WITH A CENTRAL COMPUTER COMPRISING A HOLE SENSING CIRCUIT UTILIZING IN COMBINATION (A) A LIGHT SOURCE, (B) A DETECTION CIRCUIT COMPRISING A SOLID STATE PHOTOCONDUCTOR, AND (C) A SEMICONDUCTOR THYRATRON CONNECTED IN CIRCUIT RELATIONSHIP SUCH THAT WHEN THE PHOTOCONDUCTOR IS ILLUMINATED, THE THYRATRON WILL BE CAUSED TO FIRE AND (D) MEANS FOR SUPPLYING A LOW VOLTAGE INTERROGATION PULSE TO THE PHOTOCONDUCTOR THYRATRON CIRCUIT, WHICH
Claim 2
Dependent Claim
70 words
A PASSIVE REMOTE TERMINAL FOR USE WITH A CENTRAL COMPUTER COMPRISING A HOLE SENSING CIRCUIT UTILIZING IN COMBINATION (A) A LIGHT SOURCE, (B) A DETECTION CIRCUIT COMPRISING A SOLID STATE PHOTOCONDUCTOR, AND (C) A SEMICONDUCTOR THYRATRON CONNECTED IN CIRCUIT RELATIONSHIP SUCH THAT WHEN THE PHOTOCONDUCTOR IS ILLUMINATED, THE THYRATRON WILL BE CAUSED TO FIRE AND (D) MEANS FOR SUPPLYING A LOW VOLTAGE INTERROGATION PULSE TO THE PHOTOCONDUCTOR THYRATRON CIRCUIT, WHICH
References Cited (Backward Citations)
US2975967A
Cited
US3209154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |