Patent US3340781A successfully refreshed from Google Patents.
US3340781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain grids for runways and mutual locking elements for forming the same
Assignee: Individual
•
Filing: 1965-08-02
•
Granted: 1967-09-12
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 See Jacques Leon Alexandre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:32
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/42; E04C2/421; E04C2/422; E04C2/423; E01; E01C; E01C13/00; E01C13/10; E01C13/12; E01C5/00; E01C5/20; E06; E06B; E06B9/00; E06B9/01; E01C2201/00; E01C2201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A GRID FOR RUNWAYS COMPRISING A PLURALITY OF RESILIENT RING ELEMENTS, EACH OF IDENTICAL FORM, AND SAID ELEMENTS BEING IN INTERLOCKED RELATIONSHIP, EACH OF SAID RING ELEMENTS HAVING SPACED PAIRS OF RECESSES IN THE UPPER SURFACE ALTERNATING WITH SPACED PAIRS OF RECESSES IN THE LOWER SURFACE, A BEAD ALONG THE BASE OF EACH RECESS AND A NOTCH IN EACH SIDE OF THE RESPECTIVE RECESSES, SAID RINGS BEING INTERFITTED WITH THE LOWER RECESSES INTERFITTINGS WITH UPPER RECESSES AND THE NOTCHES RECEIVING THE BEADS IN SNAP FIT RELATION.
Claim 2
Dependent Claim
86 words
A GRID FOR RUNWAYS COMPRISING A PLURALITY OF RESILIENT RING ELEMENTS, EACH OF IDENTICAL FORM, AND SAID ELEMENTS BEING IN INTERLOCKED RELATIONSHIP, EACH OF SAID RING ELEMENTS HAVING SPACED PAIRS OF RECESSES IN THE UPPER SURFACE ALTERNATING WITH SPACED PAIRS OF RECESSES IN THE LOWER SURFACE, A BEAD ALONG THE BASE OF EACH RECESS AND A NOTCH IN EACH SIDE OF THE RESPECTIVE RECESSES, SAID RINGS BEING INTERFITTED WITH THE LOWER RECESSES INTERFITTINGS WITH UPPER RECESSES AND THE NOTCHES RECEIVING THE BEADS IN SNAP FIT RELATION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |