US2648264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing unit
Assignee: Individual
•
Filing: 1946-11-01
•
Granted: 1953-08-11
•
Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Green Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/09; E01C23/096; E01C19/00; E01C19/12; E01C19/16; E01C19/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US498957A
Cited
US817298A
Cited
GB325965A
Cited
US2227845A
Cited
US2420410A
Cited
US2290720A
Cited
US2318142A
Cited
US2439367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |