US3501367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb core structure
Assignee: BOYD J PARKER
•
Filing: 1966-11-14
•
Granted: 1970-03-17
•
Expires: 1986-11-14
Abstract
No abstract record available.
Inventors
- 👤 Boyd J Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:02
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B21; B21D; B21D47/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528310A
Cited
US2577120A
Cited
US3018205A
Cited
US3170471A
Cited
US3234489A
Cited
US3227600A
Cited
US3425885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |