Patent US2987813A successfully refreshed from Google Patents.
US2987813A
Expired / Lapsed
US
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Hermetically sealing a tubular element or container
Assignee: AMERICAN RESISTOR Corp
•
Filing: 1957-05-01
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Granted: 1961-06-13
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Pope Martin
- 👤 Brady John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:42
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/228; H01G4/248; B; B23; B23K; B23K1/00; B23K1/0008; B23K1/001; H01C; H01C1/00; H01C1/02; H01C1/024; H01C1/14; H01C1/144; H01C17/00; H01C17/28
Claims Analysis
Total Claims: 0
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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) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |