Patent US3550946A successfully refreshed from Google Patents.
US3550946A
Expired / Lapsed
US
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Practice device for golfers
Assignee: LOUIS A DUINO
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Filing: 1969-04-09
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Granted: 1970-12-29
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Expires: 1989-04-09
Abstract
No abstract record available.
Inventors
- 👤 Julius Menendez
- 👤 Louis A Duino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:07
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3621; A63B69/3667; A63B71/00; A63B71/02; A63B71/023; A63B2071/024; A63B71/06; A63B2071/0694; A63B2210/00; A63B2210/50; A63B2225/00; A63B2225/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |