US3274425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament for electron gun
Assignee: Sciaky Brothers Inc
•
Filing: 1964-07-31
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Granted: 1966-09-20
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Sciaky David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:35
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/02; H01J37/04; H01J37/06; H01J37/067; H01J37/065; H01J37/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AN ELECTRON EMITTING ELEMENT COMPRISING A STRIP OF METAL HAVING A SHAPE WHICH PROVIDES A PAIR OF SPACED CLAMPING PORTIONS AND A CENTRAL CYLINDRICAL SECTION CONNECTING WITH THE CLAMPING PORTIONS.
Claim 2
Dependent Claim
30 words
AN ELECTRON EMITTING ELEMENT COMPRISING A STRIP OF METAL HAVING A SHAPE WHICH PROVIDES A PAIR OF SPACED CLAMPING PORTIONS AND A CENTRAL CYLINDRICAL SECTION CONNECTING WITH THE CLAMPING PORTIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |