US3056540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflation devices
Assignee: Walter Kidde Ltd
•
Filing: 1960-03-14
•
Granted: 1962-10-02
•
Expires: 1980-03-14
Abstract
No abstract record available.
Inventors
- 👤 Marsh John Oliver
- 👤 Pohler Derrick Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:32
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; B; B63; B63C; B63C9/00; B63C9/24; B63C2009/0023; B63C2009/0076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |