US2793786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure
Assignee: Individual
•
Filing: 1954-09-28
•
Granted: 1957-05-28
•
Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Walker Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:04
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/16; F16J13/18; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0886; Y10T292/0887; Y10T292/0891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US336730A
Cited
US1305825A
Cited
US688948A
Cited
US1000636A
Cited
US1436617A
Cited
US1567650A
Cited
US1525108A
Cited
DE830171C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |