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US2844837A
Expired / Lapsed
US
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Mop head for window cleaning
Assignee: Individual
•
Filing: 1956-09-04
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Granted: 1958-07-29
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Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 John J Mackert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:01
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/24; A47L13/254; A47L13/257; A47L1/00; A47L1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190427494A
Cited
GB190720326A
Cited
US964355A
Cited
GB147527A
Cited
CH179016A
Cited
CH193298A
Cited
US2190427A
Cited
US2341818A
Cited
FR1029722A
Cited
GB729790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |