Patent US3383727A successfully refreshed from Google Patents.
US3383727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: Individual
•
Filing: 1966-03-24
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Granted: 1968-05-21
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Expires: 1986-03-24
Abstract
No abstract record available.
Inventors
- 👤 William H Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:09
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/002; H01R43/14; H02; H02G; H02G1/00; H02G1/12; H02G1/1285; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US289132A
Cited
US352405A
Cited
US753189A
Cited
US1015915A
Cited
US1510157A
Cited
US1497899A
Cited
US1526579A
Cited
US1684481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |