US2998220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading gate assemblies
Assignee: Western States Machine Co
•
Filing: 1956-02-28
•
Granted: 1961-08-29
•
Expires: 1976-02-28
Abstract
No abstract record available.
Inventors
- 👤 Grieselhuber William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/18; F16K3/188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US708990A
Cited
GB190406541A
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US1360805A
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US1834870A
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US2265176A
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US2240049A
Cited
US2293269A
Cited
US2337817A
Cited
US2386589A
Cited
US2476711A
Cited
US2640565A
Cited
FR1114153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |