US2984249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Umbrella structure
Assignee: Individual
•
Filing: 1957-12-16
•
Granted: 1961-05-16
•
Expires: 1977-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Isaac W Sears
- 👤 Vernon H Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:28
CPC Classifications
A; A45; A45B; A45B11/00; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32188; Y10T403/32196; Y10T403/32254; Y10T403/32262; Y10T403/32311; Y10T403/32606; Y10T403/32631; Y10T403/32681; Y10T403/32704; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US339793A
Cited
US438238A
Cited
US494556A
Cited
US508418A
Cited
US566361A
Cited
US1574899A
Cited
US2767723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |