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Patent US2837020A successfully refreshed from Google Patents.
US2837020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protector
Assignee: Individual
•
Filing: 1955-03-30
•
Granted: 1958-06-03
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Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 Martin S Gaspardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:14
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/06; B62D33/0617; B60; B60H; B60H1/00; B60H1/00357; B60H1/00378
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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |