US2898571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of manufacturing tubular sheathed heating elements
Assignee: Metropolitan Vickers Electrical Co Ltd
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Filing: 1955-12-16
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Granted: 1959-08-04
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 Moule Gordon Henry
- 👤 Urry John Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:17
CPC Classifications
F; F23; F23Q; F23Q7/00; F23Q7/001; F23Q2007/004; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49092; Y10T29/49094
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |