US3409907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armour
Assignee: Wilkinson Sword Ltd
•
Filing: 1965-07-02
•
Granted: 1968-11-12
•
Expires: 1985-07-02
Abstract
No abstract record available.
Inventors
- 👤 Barratt Leonard Arth Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:11
CPC Classifications
F; F41; F41H; F41H1/00; F41H1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191510991A
Cited
FR476476A
Cited
US2076076A
Cited
GB552488A
Cited
GB915345A
Cited
US3130414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |