Patent US3139558A successfully refreshed from Google Patents.
US3139558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Igniter
Assignee: Honeywell Inc
•
Filing: 1960-07-01
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Granted: 1964-06-30
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Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 Birger A Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/02; F23Q9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A LOW VOLTAGE IGNITER FOR A GAS BURNER, THE COMBINATION COMPRISING LEAD WIRES OF APPROXIMATELY 2/12 OF THE IGNITER''S TOTAL RESISTANCE, AN IGNITER COIL OF APPROXIMATELY 3/12 OF THE IGNITER''S TOTAL RESISTANCE AND RESISTANCE MEANS OF APPROXIMATELY 7/12 OF THE IGNITER''S TOTAL RESISTANCE IN SERIES WITHSAID LEADS AND COIL, THE EFFECTIVE LENGTH OF THE WIRE OF SAID COIL BEING LESS THAN ONE INCH AND THE EFFECTIVE LENGTH OF THE COIL BEING LESS THAN 1/2 INCH.
Claim 2
Dependent Claim
76 words
IN A LOW VOLTAGE IGNITER FOR A GAS BURNER, THE COMBINATION COMPRISING LEAD WIRES OF APPROXIMATELY 2/12 OF THE IGNITER''S TOTAL RESISTANCE, AN IGNITER COIL OF APPROXIMATELY 3/12 OF THE IGNITER''S TOTAL RESISTANCE AND RESISTANCE MEANS OF APPROXIMATELY 7/12 OF THE IGNITER''S TOTAL RESISTANCE IN SERIES WITHSAID LEADS AND COIL, THE EFFECTIVE LENGTH OF THE WIRE OF SAID COIL BEING LESS THAN ONE INCH AND THE EFFECTIVE LENGTH OF THE COIL BEING LESS THAN 1/2 INCH.
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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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |