Patent US3412939A successfully refreshed from Google Patents.
US3412939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-color spray gun with ball valve
Assignee: Wald Indusries Inc
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Filing: 1967-05-03
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Granted: 1968-11-26
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Expires: 1987-05-03
Abstract
No abstract record available.
Inventors
- 👤 William R Shaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/14; B05B12/1409; B05B7/00; B05B7/02; B05B7/12; B05B7/1209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2998223A
Cited
US3038693A
Cited
US3118650A
Cited
US3058484A
Cited
US3181834A
Cited
US3100499A
Cited
US3083913A
Cited
US3198394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |