US3412903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for heating and dispensing viscous materials
Assignee: Parkway Products Inc
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Filing: 1967-06-20
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Granted: 1968-11-26
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Expires: 1987-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jr William P Van Riper
- 👤 Thomas A Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:47
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/06; B67D7/58; B67D7/62; B67D7/64; B67D7/645; B29; B29B; B29B13/00; B29B13/02; B29B13/022; F; F04; F04B; F04B15/00; F04B15/02; F04B53/00; F04B53/08; F04D; F04D29/00; F04D29/58; F04D29/586; F16; F16N; F16N39/00; F16N39/04
Claims Analysis
Total Claims: 0
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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) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |