US3450592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple use geometrical shape
Assignee: Plykon Corp
•
Filing: 1967-10-20
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Granted: 1969-06-17
•
Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Peter S Conrad
- 👤 Arthur S Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/16; A47; A47G; A47G33/00; A47G33/04; A47G33/08; Y; Y10; Y10T; Y10T428/00; Y10T428/8305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2067241A
Cited
US2940760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |