US2636022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dielectric compositions
Assignee: Sprague Electric Co
•
Filing: 1950-09-14
•
Granted: 1953-04-21
•
Expires: 1970-09-14
Abstract
No abstract record available.
Inventors
- 👤 Lester A Brooks
- 👤 Markarian Moushy
- 👤 Nazzewski Mathew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:21
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND SELECTED FROM THE CLASS WHICH CONFORMS TO THE FORMULA
Claim 2
Dependent Claim
11 words
A COMPOUND SELECTED FROM THE CLASS WHICH CONFORMS TO THE FORMULA
References Cited (Backward Citations)
US2043941A
Cited
US2125649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-20 | 1956-10-20 | 1957-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-20 | 1960-10-20 | 1961-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-20 | 1964-10-20 | 1965-04-21 | $7700.00 | Window Closed / Lapsed |