US2704847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stiffener for cap
Assignee: Individual
•
Filing: 1951-12-03
•
Granted: 1955-03-29
•
Expires: 1971-12-03
Abstract
No abstract record available.
Inventors
- 👤 Macpherson William Coatsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:54
CPC Classifications
A; A42; A42B; A42B1/00; A42B1/018; A42B1/0181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US260333A
Cited
US620776A
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US1529300A
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US1505183A
Cited
US1789188A
Cited
US2178860A
Cited
US2331545A
Cited
US2445487A
Cited
US2450169A
Cited
US2555348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |