US2797108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand eliminator bearing for a sprinkler head
Assignee: BUCKNER Manufacturing Co Inc
•
Filing: 1953-09-14
•
Granted: 1957-06-25
•
Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 John A Royer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:32
CPC Classifications
B; B05; B05B; B05B3/00; B05B3/02; B05B3/025; B05B3/026; B05B3/04; B05B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18296E
Cited
US2733080A
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US830392A
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US1564270A
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GB211185A
Cited
DE436224C
Cited
US1621980A
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US1996899A
Cited
US2075336A
Cited
FR830586A
Cited
US2185822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |