Patent US2818593A successfully refreshed from Google Patents.
US2818593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window washer
Assignee: Individual
•
Filing: 1952-09-26
•
Granted: 1958-01-07
•
Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Karl A Klingler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:46
CPC Classifications
A; A47; A47L; A47L1/00; A47L1/06; A47L1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1132449A
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US1334911A
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US1558503A
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US1840023A
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US2186140A
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US2295490A
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US2369708A
Cited
US2452057A
Cited
US2528599A
Cited
US2658218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |