US2877334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heaters
Assignee: Edwin L Wiegand Co
•
Filing: 1956-07-24
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Granted: 1959-03-10
•
Expires: 1976-07-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Mcorlly
- 👤 Ammerman George Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:06
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/68; H05B3/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |