US3374535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electric heaters
Assignee: Olin Corp
•
Filing: 1960-03-09
•
Granted: 1968-03-26
•
Expires: 1980-03-09
Abstract
No abstract record available.
Inventors
- 👤 Lester J Tranel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:38
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H02; H02G; H02G1/00; H02G1/06; H02G1/08; H02G1/086; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
THE METHOD OF INSTALLING A HEATER WIRE IN A SERPENTINE PASSAGE, COMPRISING THE STEPS OF: PROVIDING A COIL OF HEATER WIRE; DISPOSING THE END OF THE COIL OF HEATER WIRE ADJACENT AN OUTLET END OF THE PASSAGE; AND FORCIBLY PULSATING FLUID AGAINST THE WIRE AND INTO THE OUTLET END
References Cited (Backward Citations)
US979899A
Cited
US2470338A
Cited
US2622306A
Cited
US2681729A
Cited
US2823153A
Cited
US2794758A
Cited
US2920377A
Cited
US3031735A
Cited
US2971267A
Cited
BE572313A
Cited
US3079673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |