US3511957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for improving efficiency of radio-frequency welding
Assignee: Continental Can Co Inc
•
Filing: 1965-02-02
•
Granted: 1970-05-12
•
Expires: 1985-02-02
Abstract
No abstract record available.
Inventors
- 👤 Howard S Cannon
- 👤 Phillip F Catalano
- 👤 John D Glomb
- 👤 Roger M O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:31
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/01; B23K13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2744040A
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US2833910A
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US2933582A
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US3004134A
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US3031554A
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US3117092A
Cited
US3028469A
Cited
US3209115A
Cited
US3242299A
Cited
US3379853A
Cited
US3270176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |