US2990607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing electric heating pads
Assignee: Individual
•
Filing: 1955-05-31
•
Granted: 1961-07-04
•
Expires: 1975-05-31
Abstract
No abstract record available.
Inventors
- 👤 Negromanti Antonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/36; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/017; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1564681A
Cited
US2493968A
Cited
US2621139A
Cited
US2548467A
Cited
US2548468A
Cited
US2757273A
Cited
US2774051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |