Patent US3017688A successfully refreshed from Google Patents.
US3017688A
Expired / Lapsed
US
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Method and apparatus of making electrical heating elements
Assignee: Motors Liquidation Co
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Filing: 1957-02-28
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Granted: 1962-01-23
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Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Cummings
- 👤 Henry D Mowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:02
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B3/52; H01; H01B; H01B7/00; H01B7/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49092; Y10T29/49826; Y10T29/49838; Y10T29/53; Y10T29/53126; Y10T29/5313; Y10T29/532
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1997844A
Cited
FR768934A
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US2088446A
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US2515487A
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US2525300A
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US2568846A
Cited
US2677172A
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US2771669A
Cited
US2808492A
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US2841201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |