US3494651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring clips for underfloor trench covers
Assignee: Hospitality Homes
•
Filing: 1967-06-06
•
Granted: 1970-02-10
•
Expires: 1987-06-06
Abstract
No abstract record available.
Inventors
- 👤 Frank W Fork
- 👤 William H Fuellenwarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:08
CPC Classifications
H; H02; H02G; H02G9/00; H02G9/06; H02G9/065; E; E04; E04B; E04B5/00; E04B5/48; Y; Y10; Y10T; Y10T292/00; Y10T292/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1662422A
Cited
US2006747A
Cited
FR1357069A
Cited
GB1009092A
Cited
US3262238A
Cited
US3286412A
Cited
US3329763A
Cited
US3368311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |