US2887004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staple having flat depressed head with reinforcing ridge
Assignee: Individual
•
Filing: 1954-11-04
•
Granted: 1959-05-19
•
Expires: 1974-11-04
Abstract
No abstract record available.
Inventors
- 👤 William H Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:59
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/0015; Y; Y10; Y10S; Y10S411/00; Y10S411/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US324126A
Cited
US506861A
Cited
US589584A
Cited
US617064A
Cited
US2351608A
Cited
US934686A
Cited
US951393A
Cited
US2174708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |