US2915325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separable couplings
Assignee: Lone Star Gas Co
•
Filing: 1954-04-30
•
Granted: 1959-12-01
•
Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 Robert F Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:57
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/1007; B; B67; B67D; B67D7/00; B67D7/06; B67D7/32; B67D7/3218; F16L37/00; F16L37/02; F16L37/08; F16L37/084; F16L37/098; F16L37/0985; F16L37/28; F16L37/30; F16L37/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23365E
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US166489A
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US115917A
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GB111541A
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US1328488A
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FR768040A
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US2238706A
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US2299193A
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US2406662A
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US2453480A
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US2453741A
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US2665928A
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US2648553A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |