US2530827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric igniter for gaseous fuel
Assignee: Robertshaw Controls Co
•
Filing: 1945-05-01
•
Granted: 1950-11-21
•
Expires: 1965-05-01
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Lakota
- 👤 Theodore E Rudiselle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US235979A
Cited
US252849A
Cited
US1118942A
Cited
US1256571A
Cited
US1542752A
Cited
FR602237A
Cited
FR648156A
Cited
US2299108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |