Patent US3500840A successfully refreshed from Google Patents.
US3500840A
Expired / Lapsed
US
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Cleaning and sterilizing apparatus for barbering tools
Assignee: HARVEY R MAATZ
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Filing: 1967-11-30
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Granted: 1970-03-17
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Expires: 1987-11-30
Abstract
No abstract record available.
Inventors
- 👤 Harvey R Maatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:13
CPC Classifications
A; A61; A61L; A61L2/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1524084A
Cited
US1979504A
Cited
DE669649C
Cited
US2324234A
Cited
US3365267A
Cited
US3267944A
Cited
US3338251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |