US3367280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Royal Industries Co Ltd
•
Filing: 1966-03-07
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Granted: 1968-02-06
•
Expires: 1986-03-07
Abstract
No abstract record available.
Inventors
- 👤 Richard D Bennett
- 👤 Marvin D Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:07
CPC Classifications
F; F16; F16L; F16L1/00; B; B60; B60P; B60P3/00; B60P3/14; E; E04; E04G; E04G21/00; E04G21/02; E04G21/04; E04G21/0418; E04G21/0436; F16L3/00; F16L3/01; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US439383A
Cited
US1013323A
Cited
US1835132A
Cited
US3061201A
Cited
US3055594A
Cited
US3074649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |