US2931383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curb box having locating magnet therein
Assignee: Handley Brown Heater Co
•
Filing: 1957-02-13
•
Granted: 1960-04-05
•
Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 Harold E Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:55
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; F16K31/5284; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6966; Y10T137/6991; Y10T137/6995; Y10T137/701; Y10T137/7014; Y10T137/7021; Y10T137/8811
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US358515A
Cited
US380308A
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US906886A
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US986905A
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US997412A
Cited
US996956A
Cited
US1349610A
Cited
FR748701A
Cited
US1975976A
Cited
US2527681A
Cited
US2828762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |