Patent CH191096A successfully refreshed from Google Patents.
US2555689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark limiting control circuits
Assignee: Joy Manufacturing Co
•
Filing: 1947-05-15
•
Granted: 1951-06-05
•
Expires: 1967-05-15
Abstract
No abstract record available.
Inventors
- 👤 Reimer G Gehlsen
- 👤 James H Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US771307A
Cited
US1216867A
Cited
GB191311960A
Cited
US1179728A
Cited
US1358701A
Cited
CH98164A
Cited
US1545886A
Cited
US1602993A
Cited
US1722419A
Cited
GB252750A
Cited
US1706124A
Cited
US1672067A
Cited
US1918071A
Cited
US1966077A
Cited
US2068399A
Cited
US2114687A
Cited
US2424081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |