Patent US3218741A successfully refreshed from Google Patents.
US3218741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating for steam iron flash boiler
Assignee: Hoover Co
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Filing: 1963-09-03
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Granted: 1965-11-23
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Expires: 1983-09-03
Abstract
No abstract record available.
Inventors
- 👤 Frank A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:18
CPC Classifications
D; D06; D06F; D06F75/00; D06F75/08; D06F75/10; D06F75/14; D06F75/18; B; B22; B22D; B22D19/00; B22D19/0045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A SOLE PLATE FOR A STEAM IRON, A FLASH BOILER FORMED ON SAID SOLE PLATE AND A COATING EMBEDDED IN THE SURFACE OF SAID FLASH BOILER INCLUDING MICA FLAKES AND AN ALUMINA BINDER FOR SAID MICA FLAKES.
Claim 2
Dependent Claim
37 words
A SOLE PLATE FOR A STEAM IRON, A FLASH BOILER FORMED ON SAID SOLE PLATE AND A COATING EMBEDDED IN THE SURFACE OF SAID FLASH BOILER INCLUDING MICA FLAKES AND AN ALUMINA BINDER FOR SAID MICA FLAKES.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |