US2877332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip heater
Assignee: Empire Products Inc
•
Filing: 1955-07-05
•
Granted: 1959-03-10
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Senior Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
B; B23; B23K; B23K5/00; B23K5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2250870A
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US2314738A
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US2457007A
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US2590417A
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US2629363A
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US2627014A
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US2667563A
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US2662157A
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US2668896A
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US2722597A
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US2760045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |