Patent US156198A successfully refreshed from Google Patents.
US3545996A
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Method and apparatus for producing a decorative effect on stainless steel and other surface
Assignee: Zero Manufacturing Co
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Filing: 1969-02-25
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Granted: 1970-12-08
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Expires: 1989-02-25
Abstract
No abstract record available.
Inventors
- 👤 Leon L Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:48
CPC Classifications
B; B24; B24C; B24C1/00; B24C1/10; B24C3/00; B24C3/02; B24C3/06; B24C3/065; B44; B44C; B44C1/00; B44C1/005; B44C1/22; B44C1/221; C; C21; C21D; C21D7/00; C21D7/02; C21D7/04; C21D7/06; C25; C25D; C25D5/00; C25D5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US467155A
Cited
US1912581A
Cited
US2067949A
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US2218572A
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US2455514A
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US3100724A
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US3044218A
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US3023727A
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US3013892A
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US3178308A
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US3138845A
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US3287157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |