US2500086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for ladders
Assignee: Individual
•
Filing: 1946-08-19
•
Granted: 1950-03-07
•
Expires: 1966-08-19
Abstract
No abstract record available.
Inventors
- 👤 Jack T Mintus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:06
CPC Classifications
E; E06; E06C; E06C7/00; E06C7/48; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32319; Y10T403/32549; Y10T403/32557; Y10T403/32606; Y10T403/32951; Y10T403/32967
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US310218A
Cited
GB190812062A
Cited
US1600572A
Cited
US2021017A
Cited
US2320407A
Cited
US2419065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |