US2500583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing and waterproofing machine
Assignee: Individual
•
Filing: 1945-08-27
•
Granted: 1950-03-14
•
Expires: 1965-08-27
Abstract
No abstract record available.
Inventors
- 👤 Charles R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:41
CPC Classifications
E; E04; E04D; E04D15/00; E04D15/06; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1788; Y10T156/179; Y10T156/1795
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US166296A
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US703327A
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US905190A
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US1124407A
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US1188810A
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US1433713A
Cited
US1755376A
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US1751452A
Cited
US1759920A
Cited
US1778551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |