US3119953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture and heat sensitive electronic switching circuit
Assignee: Individual
•
Filing: 1960-05-03
•
Granted: 1964-01-28
•
Expires: 1980-05-03
Abstract
No abstract record available.
Inventors
- 👤 Roy N Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:24
CPC Classifications
E; E01; E01B; E01B7/00; E01B7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AUTOMATIC ENVIRONMENTAL CONTROL MEANS COMPRISING: ENVIRONMENTAL SENSING SWITCH MEANS; OUTPUT CONTROL SWITCH MEANS; RELAY MEANS OPERATIVELY CONNECTED TO THE OUTPUT CONTROL SWITCH MEANS FOR CONTROL THEREOF; A SOURCE OF DIRECT CURRENT ENERGY; RELAY CONTROL MEANS INCLUDING A GAS TUBE HAVING A CATHODE, A CONTROL GRID AND A PLATE, MEANS FOR APPLYING A CONSTANT POSITIVE POTENTIAL TO THE PLATE AND INITIALLY A NEGATIVE POTENTIAL TO THE CATHODE OF ONE VALUE TO RENDER THE TUBE CONDUCTIVE IN RESPONSE TO A POSITIVE
Claim 2
Dependent Claim
79 words
AUTOMATIC ENVIRONMENTAL CONTROL MEANS COMPRISING: ENVIRONMENTAL SENSING SWITCH MEANS; OUTPUT CONTROL SWITCH MEANS; RELAY MEANS OPERATIVELY CONNECTED TO THE OUTPUT CONTROL SWITCH MEANS FOR CONTROL THEREOF; A SOURCE OF DIRECT CURRENT ENERGY; RELAY CONTROL MEANS INCLUDING A GAS TUBE HAVING A CATHODE, A CONTROL GRID AND A PLATE, MEANS FOR APPLYING A CONSTANT POSITIVE POTENTIAL TO THE PLATE AND INITIALLY A NEGATIVE POTENTIAL TO THE CATHODE OF ONE VALUE TO RENDER THE TUBE CONDUCTIVE IN RESPONSE TO A POSITIVE
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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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |